US2478334A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Temple hinge connection for ophthalmic mountings
Assignee: American Optical Corp
•
Filing: 1945-05-28
•
Granted: 1949-08-09
•
Expires: 1965-05-28
Abstract
No abstract record available.
Inventors
- 👤 Edward M Splaine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:36
CPC Classifications
G; G02; G02C; G02C5/00; G02C5/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1585836A
Cited
FR763805A
Cited
GB465678A
Cited
GB470666A
Cited
GB484725A
Cited
US2243767A
Cited
US2300834A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-08-08 | 1953-02-07 | 1953-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-08-08 | 1957-02-07 | 1957-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-08-08 | 1961-02-07 | 1961-08-09 | $7700.00 | Window Closed / Lapsed |