Patent US2838983A successfully refreshed from Google Patents.
US2838983A
Expired / Lapsed
US
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Photographic lens shutter
Assignee: Individual
•
Filing: 1952-11-18
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Granted: 1958-06-17
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Expires: 1972-11-18
Abstract
No abstract record available.
Inventors
- 👤 Burger Erich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:15
CPC Classifications
G; G03; G03B; G03B9/00; G03B9/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1332173A
Cited
US2238115A
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US2232969A
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US2256355A
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US2319086A
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US2563782A
Cited
US2511201A
Cited
US2662457A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-16 | 1961-12-16 | 1962-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-16 | 1965-12-16 | 1966-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-16 | 1969-12-16 | 1970-06-17 | $7700.00 | Window Closed / Lapsed |