US2076432A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ophthalmic lens
Assignee: American Optical Corp
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Filing: 1934-09-14
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Granted: 1937-04-06
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Expires: 1954-09-14
Abstract
No abstract record available.
Inventors
- 👤 Fay D Kinney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:13
CPC Classifications
G; G02; G02C; G02C7/00; G02C7/10; G02C7/105; G02C2202/00; G02C2202/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1940-04-05 | 1940-10-05 | 1941-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-04-05 | 1944-10-05 | 1945-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-04-05 | 1948-10-05 | 1949-04-06 | $7700.00 | Window Closed / Lapsed |