|
| US3930717 | 15 Mar 1974 | 6 Jan 1976 | Imperial Chemical Industries Limited | Variable light transmission device containing ferrous ammonium sulfate as an auxiliary redox system |
| US3958409 | 12 Sep 1974 | 25 May 1976 | | Watch display |
| US3969887 | 6 Mar 1974 | 20 Jul 1976 | Kabushiki Kaisha Suncrux Research Office | Electronically controlled timepieces using liquid crystal display elements |
| US3981560 | 16 Jun 1975 | 21 Sep 1976 | RCA Corporation | Electrochromic display device |
| US3987433 | 2 Sep 1975 | 19 Oct 1976 | Timex Corporation | Electrochromic display driver having interleaved write and erase operations |
| US3998525 | 21 Aug 1975 | 21 Dec 1976 | American Cyanamid Company | Edge lighted electrochromic displays |
| US4006585 | 3 Jan 1975 | 8 Feb 1977 | Citizen Watch Co., Ltd. | Electronic timepiece with electrochromic display element |
| US4006969 | 8 Dec 1975 | 8 Feb 1977 | Kabushiki Kaisha Suwa Seikosha | Electro-chromic display device |
| US4019809 | 25 Jun 1975 | 26 Apr 1977 | Kabushiki Kaisha Suwa Seikosha | Electrochromic display device |
| US4021100 | 23 Apr 1976 | 3 May 1977 | American Cyanamid Company | Electrochromic device having an electrolyte contained in a solid porous insulating layer |
| US4034550 | 8 Apr 1975 | 12 Jul 1977 | Kabushiki Kaisha Suwa Seikosha | Electronic wristwatch digital display |
| US4059341 | 2 Apr 1976 | 22 Nov 1977 | BBC Brown, Boveri & Company, Limited | Electrochromic display device with electrolytes and a method of producing the same |
| US4060974 | 1 Jul 1976 | 6 Dec 1977 | Citizen Watch Company Limited | Method and apparatus for driving electrochromic display device |
| US4060975 | 13 Jul 1976 | 6 Dec 1977 | Citizen Watch Company Limited | Method and apparatus for driving electrochromic display device |
| US4092637 | 5 May 1976 | 30 May 1978 | International Business Machines Corporation | Liquid electrolyte type electrochromic display device |
| US4099247 | 16 Sep 1976 | 4 Jul 1978 | Canon Kabushiki Kaisha | Electronic instrument with non-volatile display |
| US4110015 | 25 May 1977 | 29 Aug 1978 | American Cyanamid Company | Electrolytes for use in electrochromic devices |
| US4123346 | 10 May 1977 | 31 Oct 1978 | Thomson-CSF | Electrophoretic device |
| US4139275 | 2 Mar 1977 | 13 Feb 1979 | Sharp Kabushiki Kaisha | Electrochromic display |
| US4149146 | 7 Feb 1977 | 10 Apr 1979 | Citizen Watch Company Limited | Driver circuit for electrochromic display device |
| US4150365 | 1 Jul 1976 | 17 Apr 1979 | Citizen Watch Co., Ltd. | Driver circuit for electrochromic display device |
| US4152490 | 16 Jan 1978 | 1 May 1979 | Optel Corporation | Radiant energy converter having storage |
| US4156559 | 16 Jun 1977 | 29 May 1979 | Commissariat a l'Energie Atomique | Electrolytic display cell |
| US4219809 | 17 Jul 1978 | 26 Aug 1980 | Times Corporation | Compensation scheme for electrochromic displays |
| US4298115 | 9 Feb 1979 | 3 Nov 1981 | Micro-Circuits Company | Time-lapse indicator |
| US4306773 | 20 Nov 1978 | 22 Dec 1981 | General Motors Corporation | Electrochromic display device having reduced film dissolution |
| US4322133 | 11 Dec 1979 | 30 Mar 1982 | Sharp Kabushiki Kaisha | Method of driving electrochromic display device and electrochromic display device therefor |
| US4348077 | 19 Nov 1979 | 7 Sep 1982 | Matsushita Electric Industrial Co., Ltd. | Electrochromic display device |
| US4364670 | 28 Nov 1979 | 21 Dec 1982 | North American Philips Corporation | Electrophoretic elapsed time indicator |
| US4459034 | 3 Dec 1982 | 10 Jul 1984 | Mitsubishi Denki Kabushiki Kaisha | Time display apparatus |
| US5920256 | 8 Apr 1997 | 6 Jul 1999 | UT Automotive Dearborn, Inc. | Gauge with mechanical indicator and reconfigurable gauge display |
| US7702434 | 3 Sep 2004 | 20 Apr 2010 | Volkswagen AG | Indicating apparatus for a motor vehicle |
| USD390799 | 10 Feb 1997 | 17 Feb 1998 | Lux Products Corporation | Timer display |
