G01J 1/4219
Specially adapted for enlargers
Official title: {specially adapted for enlargers}
G01J1/4219 (Specially adapted for enlargers) appears on 6 US grants and 0 published applications in this corpus.
Search patents in G01J- Granted patents
- 6
- Published applications
- 0
- Assignees
- 5
- Inventors
- 6
- Latest grant
- 6 Mar 1990
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Light sensing and emitting devices with a safelight6 Mar 1990US 4,906,835 AGeneral Electric Company
- Contrast monitor14 Mar 1989US 4,812,882 ACiba-Geigy Corporation
- Reproduction camera with system to correct exposure for stray light17 Dec 1985US 4,558,945 AHelioprint AS
- Reproduction camera control system18 Dec 1984US 4,488,805 AOce-Helioprint AS
- Light measuring apparatus incorporating means for shielding light sensor for predetermined minimum time23 Mar 1982US 4,320,976 ADurst AG Fabrik Fototechnischer Apparate
No published applications in this class yet.
Most cited
By later US patents