US3513763A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic shutter
Assignee: Compur Werk GmbH and Co
•
Filing: 1967-11-06
•
Granted: 1970-05-26
•
Expires: 1987-11-06
Abstract
No abstract record available.
Inventors
- 👤 Franz Singer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:55
CPC Classifications
G; G03; G03B; G03B9/00; G03B9/08; G03B9/10; G03B9/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2267794A
Cited
US2835539A
Cited
US2950665A
Cited
US2959112A
Cited
US3143758A
Cited
US3109357A
Cited
US3163195A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-05-25 | 1973-11-24 | 1974-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-25 | 1977-11-24 | 1978-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-25 | 1981-11-24 | 1982-05-26 | $7700.00 | Window Closed / Lapsed |