US2926381A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ophthalmic mountings
Assignee: American Optical Corp
•
Filing: 1957-09-30
•
Granted: 1960-03-01
•
Expires: 1977-09-30
Abstract
No abstract record available.
Inventors
- 👤 Angelis Armand De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:22
CPC Classifications
G; G02; G02C; G02C5/00; G02C5/22; G02C5/2281; G02C5/2209; G02C2200/00; G02C2200/20; Y; Y10; Y10T; Y10T403/00; Y10T403/32; Y10T403/32606; Y10T403/32861; Y10T403/32918
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US618118A
Cited
US1069209A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-01 | 1963-08-31 | 1964-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-01 | 1967-08-31 | 1968-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-01 | 1971-08-31 | 1972-03-01 | $7700.00 | Window Closed / Lapsed |