US2882793A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: American Optical Corp
•
Filing: 1954-01-07
•
Granted: 1959-04-21
•
Expires: 1974-01-07
Abstract
No abstract record available.
Inventors
- 👤 Jan E Petri
- 👤 Howard G Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:48
CPC Classifications
B; B27; B27M; B27M1/00; B27M1/02; B60; B60R; B60R1/00; B60R1/02; B60R1/08; B60R1/083; B60R1/085; G; G02; G02B; G02B5/00; G02B5/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1875554A
Cited
US2052770A
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US2307532A
Cited
US2357720A
Cited
US2442504A
Cited
US2502699A
Cited
FR1045935A
Cited
US2797620A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-20 | 1962-10-20 | 1963-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-20 | 1966-10-20 | 1967-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-20 | 1970-10-20 | 1971-04-21 | $7700.00 | Window Closed / Lapsed |