US2496408A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Camera diaphragm operating attachment
Assignee: Individual
•
Filing: 1947-09-19
•
Granted: 1950-02-07
•
Expires: 1967-09-19
Abstract
No abstract record available.
Inventors
- 👤 Polanco Nicholas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 16:07
CPC Classifications
G; G03; G03B; G03B19/00; G03B19/18; G03B19/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US437655A
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US1018635A
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US1228389A
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US1520185A
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US1780384A
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US2198454A
Cited
US2196097A
Cited
US2241596A
Cited
US2319398A
Cited
US2437159A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-02-06 | 1953-08-08 | 1954-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-06 | 1957-08-08 | 1958-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-06 | 1961-08-08 | 1962-02-07 | $7700.00 | Window Closed / Lapsed |