US2481601A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cable brace-bar ophthalmic mounting
Assignee: American Optical Corp
•
Filing: 1946-01-31
•
Granted: 1949-09-13
•
Expires: 1966-01-31
Abstract
No abstract record available.
Inventors
- 👤 Leduc Wilbur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:22
CPC Classifications
G; G02; G02C; G02C1/00; G02C1/04; G02C1/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1197214A
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US1918982A
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US2256502A
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US2253960A
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US2254746A
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US2290389A
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US2384815A
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US2383572A
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US2376977A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-09-12 | 1953-03-14 | 1953-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-09-12 | 1957-03-14 | 1957-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-09-12 | 1961-03-14 | 1961-09-13 | $7700.00 | Window Closed / Lapsed |