US2762261A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lens mount locking device
Assignee: WOLLENSAK OPTICAL CO
•
Filing: 1955-04-21
•
Granted: 1956-09-11
•
Expires: 1975-04-21
Abstract
No abstract record available.
Inventors
- 👤 Robert B Herden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:06
CPC Classifications
G; G03; G03B; G03B3/00; G03B3/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1760827A
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US1720224A
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US2110477A
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US2136149A
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US2260991A
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US2461357A
Cited
US2496928A
Cited
US2618201A
Cited
US2649024A
Cited
US2715854A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-09-11 | 1960-03-12 | 1960-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-11 | 1964-03-12 | 1964-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-11 | 1968-03-12 | 1968-09-11 | $7700.00 | Window Closed / Lapsed |