US2987976A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cameras
Assignee: Individual
•
Filing: 1956-03-30
•
Granted: 1961-06-13
•
Expires: 1976-03-30
Abstract
No abstract record available.
Inventors
- 👤 Paul S Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:23
CPC Classifications
G; G03; G03B; G03B31/00; G03B31/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2166440A
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US2125388A
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US2140445A
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US2433129A
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US2398412A
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US2406152A
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US2533800A
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US2552250A
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US2588813A
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US2773438A
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US2669917A
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US2809571A
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US2795175A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-12 | 1964-12-12 | 1965-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-12 | 1968-12-12 | 1969-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-12 | 1972-12-12 | 1973-06-13 | $7700.00 | Window Closed / Lapsed |