The following trademarks were registered by Bronica (and later Tamron), and can provide some clues as the the time period various logos and names were used for the ETR System.
All trademarks were located using the TMview Trade Mark Search Tool. Where an image is shown in the first column of the table below, this represents a figurative (brand mark or logo) trademark. Rows with text in the the first column represent word trademarks.
| Trademark | Country | Number | Filing Date | Expiration Date | Right Holder |
|---|---|---|---|---|---|
 | China | 3758633 | 20 Oct 2003 | 27 Aug 2025 | Tamron Co., Ltd. (applicant) |
| BRONICA | EU | 3427762 | 15 Oct 2003 | 15 Oct 2033 | Tamron Co., Ltd. (applicant) |
| BRONICA | UK | UK00903427762 | 15 Oct 2003 | 15 Oct 2033 | Tamron Co., Ltd. (applicant) |
 | New Zealand | 702296 | 29 Sep 2003 | 29 Sep 2033 | Tamron Co., Ltd. (applicant) |
 | R. of Korea | 4005927140000 | 23 Sep 2003 | 8 Sep 2034 | Tamron Co., Ltd. (applicant) |
| BRONICA | Mexico | 643926 | 25 Feb 2000 | 13 Jan 2020 | Tamron Co., Ltd. (applicant) |
 | Italy | 792102 | 9 Apr 1997 | Bronica Co., Ltd. | |
 | UK | UK00002101083 | 25 May 1996 | 25 May 2006 | Bronica Co., Ltd. (applicant) |
 | UK | UK00002101084 | 25 May 1996 | 25 May 2016 | Bronica Co., Ltd. (applicant) Tamron Co., Ltd. (from 5 Jul 2006) |
| ZENZANON | Switzerland | 377762 | 24 Nov 1989 | 18 Jun 2020 | Bronica Co., Ltd. (applicant) Tamron Co., Ltd. (from 21 Sep 2009) |
| ZENZANON | France | 1639320 | 12 Oct 1989 | 20 Nov 2019 | Bronica Co., Ltd. (applicant) Tamron Co., Ltd. (from 11 Aug 1999) |
| ZENZA BRONICA | Mexico | 404333 | 13 Jun 1989 | 13 Jun 2009 | Tamron Co., Ltd |
| ETRS | Japan | 2244446 | 27 Jun 1988 | 30 Jul 2020 | Bronica, Inc. (applicant) Tamron Co., Ltd. (from 17 Aug 1998) |
 | Japan | 2217045 | 4 Dec 1987 | 27 Mar 1990 | Bronica, Inc. (applicant) |
 | France | 1414169 | 17 Jun 1987 | 17 Jun 1997 | Bronica Co., Ltd. (applicant) |
 | France | 1414171 | 17 Jun 1987 | 8 Sep 2027 | Bronica Co., Ltd. (applicant) Tamron Co., Ltd. (from 19 Jun 2007) |
 | Switzerland | 361440 | 23 May 1987 | 24 Dec 2007 | Bronica Co., Ltd. (applicant) |
 | Switzerland | 361439 | 23 May 1987 | 23 May 2027 | Bronica Co., Ltd. (applicant) Tamron Co., Ltd. (from 13 Apr 2007) |
| ZENZA BRONICA | Japan | 1926252 | 14 Mar 1984 | 28 Jan 1997 | Yoshino Zenzaburo (applicant) |
| BRONICA | Japan | 1871015 | 22 Jul 1983 | 27 Jun 2026 | Yoshino Zenzaburo (applicant) Tamron Co., Ltd. (from 18 Feb 1999) |
| ZENZANON | Japan | 1710476 | 14 Dec 1981 | 28 Aug 1994 | Bronica, Inc. (applicant) |
| ZENZA BRONICA | Ireland | 100057 | 14 Jul 1981 | 14 Jul 2012 | Bronica Co., Ltd. (applicant) Tamron Co., Ltd. (from 4 Nov 2002) |
 | Portugal | 212239 | 26 Jun 1981 | 11 May 2009 | Bronica Co., Ltd. (applicant) Tamron Co., Ltd. (from 14 Sep 1998) |
| ZENZA BRONICA | Australia | 361879 | 25 Jun 1981 | 25 Jun 2002 | Bronica Co., Ltd. (applicant) |
| ZENZA BRONICA | New Zealand | 137630 | 22 Jun 1981 | 22 Jun 2016 | Tamron Co., Ltd. (since 13 Sep 2002) |
| ZENZANON | France | 1110962 | 23 Oct 1979 | Renewed as 1639320 | Zenza Bronica Industries, Inc. (applicant) |
| ZENZA BRONICA | France | 1021521 | 30 Jun 1977 | Renewed as 1414169 | Zenza Bronica Industries, Inc. (applicant) |
| BRONICA | France | 1021522 | 30 Jun 1977 | Renewed as 1414171 | Zenza Bronica Industries, Inc. (applicant) |
| BRONICA | Australia | 301958 | 9 Nov 1976 | 9 Nov 2027 | Bronica Co., Ltd. (applicant) Tamron Co., Ltd. (from 22 Aug 2006) |
| ZENZANON | USA | 918872 | 15 Jan 1970 | 11 Mar 2016 | Yoshino Zenzaburo (applicant) Bronica Co., Ltd. (from 13 Oct 1988) Tamron Co., Ltd. (from 26 Jul 2001) |
| ZENZANON | Japan | 997594 | 13 Oct 1969 | 3 Feb 2023 | Yoshino Zenzaburo (applicant) Tamron Co., Ltd. (from 18 Feb 1999) |
 | R. of Korea | 4000382810000 | 15 Apr 1969 | 29 Jul 2014 | Bronica Co., Ltd. (from 14 Mar 1985) Tamron Co., Ltd. (from 6 Feb 2004) |
 | Germany | 868498 | 24 Jul 1968 | 31 Jul 2008 | Bronica Co., Ltd. (applicant) |
 | Sweden | 123750 | 7 Jun 1968 | 7 Jun 2008 | Bronica Co., Ltd. |
| ZENZA BRONICA | Canada | TMA156856 | 24 May 1967 | 2Jan 2014 | Zenza Bronica Industries, Inc. (applicant) Bronica Co., Ltd. (from 8 Jun 1983) |
 | Spain | M0533599 | 22 Apr 1967 | 10 May 2027 | Tamron Co., Ltd. (from 26 Apr 2002) |
 | Spain | M0533598 | 22 Apr 1967 | 10 May 2027 | Tamron Co., Ltd. (from 26 Apr 2002) |
 | Denmark | VR 1968 01247 | 18 Apr 1967 | 18 Apr 2008 | Bronica Co., Ltd. (applicant) |
 | Denmark | VR 1968 01246 | 18 Apr 1967 | 18 Apr 2028 | Bronica Co., Ltd. (applicant) Tamron Co., Ltd. (from 7 May 2008) |
 | Sweden | 106582 | 5 Sep 1961 | 28 Jun 2033 | Tamron Co., Ltd. |
| BRONICA | USA | 737866 | 20 Jul 1961 | 1 Apr 2016 | Bronica Camera, Inc. (applicant) Zenza Bronica Industries, Inc. (from 19 Dec 1962) Ehrenreich Photo-Optical Industries, Inc. (under licence from 2 Aug 1967) Bronica Co., Ltd. (from 7 May 1981) G.M.I. Photographic, Inc. (from 5 Jan 1982) Omega Acquisition Corporation (from 11 Aug 1994) Tamron Co., Ltd. (from 2 May 1996) |
 | UK | UK00000823026 | 14 Jul 1961 | 14 Jul 2026 | Seiko-Cosmo Co., Ltd. (applicant) Bronica Co., Ltd. (from 5 Jul 2006) Tamron Co., Ltd. (from 21 Jul 2006) |
 | Germany | 833985 | 19 Apr 1961 | 30 Apr 2031 | Bronica Camera Co., Ltd. (applicant) Tamron Co., Ltd. (from 8 Mar 2001) |
 | USA | 0704604 | 2 Sep 1959 | 1 Aug 2016 | Yoshino Zenzaburo (applicant) Bronica Camera, Inc. (from 14 Sep 1961) Yoshino Zenzaburo (from 1 Aug 1966) Zenza Bronica Industries, Inc. (from 19 Dec 1962) Ehrenreich Photo-Optical Industries, Inc. (under licence from 2 Aug 1967) Zenza Bronica Industries, Inc. (from 21 Aug 1967) Bronica Co., Ltd. (from 7 May 1981) G.M.I. Photographic, Inc. (from 20 Dec 1982) Omega Acquisition Corporation (from 11 Aug 1994) Tamron Co., Ltd. (from 2 May 1996) |
| ZENZA BRONICA | Japan | 548379-1 | 16 Mar 1959 | 22 Feb 2000 | Yoshino Zenzaburo (applicant) Tamron Co., Ltd. (from 18 Feb 1999) |
| ZENZANON | Japan | 473249 | 18 Dec 1954 | 22 Nov 2005 | Bronica, Inc. (applicant) |