G03B 7/089
For storage of exposure value in mirror reflex cameras
Official title: for storage of exposure value in mirror reflex cameras
G03B7/089 (For storage of exposure value in mirror reflex cameras) appears on 53 US grants and 0 published applications in this corpus.
Search patents in G03B- Granted patents
- 53
- Published applications
- 0
- Assignees
- 18
- Inventors
- 77
- Latest grant
- 7 Jul 1992
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 7 | 0 |
| 1978 | 2 | 0 |
| 1979 | 5 | 0 |
| 1980 | 7 | 0 |
| 1981 | 5 | 0 |
| 1982 | 6 | 0 |
| 1983 | 0 | 0 |
| 1984 | 6 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 3 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Camera having information or function setting device7 Jul 1992US 5,128,704 ACanon Kabushiki Kaisha
- Camera system28 Aug 1990US 4,952,964 ASeikosha Co., Ltd.
- Method of and apparatus for establishing a programmable exposure response of camera17 May 1988US 4,745,428 AOlympus Optical Co., Ltd.
- AE lock device for camera26 Jan 1988US 4,721,976 ACanon Kabushiki Kaisha
- Apparatus for fixing exposure and focus in camera17 Nov 1987US 4,707,105 ANippon Kagaku K. K.
No published applications in this class yet.
Most cited
By later US patents
- Exposure control device in a camera using an electro-optic light control element32US 4,054,890 ANippon Kogaku K. K. · 1977
- Camera system25US 4,304,472 ACanon Kabushiki Kaisha · 1981
- Motion detecting device in exposure control system for optical instruments23US 4,264,161 ACanon Kabushiki Kaisha · 1981
- Camera having a sound-making element21US 4,223,987 ACanon Kabushiki Kaisha · 1980
- Motion detecting device in exposure control system for optical instrument18US 4,320,948 ACanon Kabushiki Kaisha · 1982