Patent US1936773A successfully refreshed from Google Patents.
US1936773A
Expired / Lapsed
US
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Ophthalmic mounting
Assignee: American Optical Corp
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Filing: 1930-09-01
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Granted: 1933-11-28
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Expires: 1950-09-01
Abstract
No abstract record available.
Inventors
- 👤 Edward M Splaine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:11
CPC Classifications
G; G02; G02C; G02C5/00; G02C5/14; G02C5/143; G02C3/00; G02C3/003; G02C5/16; G02C5/20
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) | 1936-11-27 | 1937-05-29 | 1937-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-11-27 | 1941-05-29 | 1941-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-11-27 | 1945-05-29 | 1945-11-28 | $7700.00 | Window Closed / Lapsed |