US2995996A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic exposure control for photographic cameras
Assignee: P Gossen and Co GmbH
•
Filing: 1957-12-11
•
Granted: 1961-08-15
•
Expires: 1977-12-11
Abstract
No abstract record available.
Inventors
- 👤 Gossen Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:18
CPC Classifications
G; G03; G03B; G03B7/00; G03B7/08; G03B7/081; G03B7/085
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2013362A
Cited
US1813635A
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US2100672A
Cited
US2206086A
Cited
US2449283A
Cited
US2841064A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-14 | 1965-02-13 | 1965-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-14 | 1969-02-13 | 1969-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-14 | 1973-02-13 | 1973-08-15 | $7700.00 | Window Closed / Lapsed |