US2963973A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gyro optical system
Assignee: Individual
•
Filing: 1953-03-26
•
Granted: 1960-12-13
•
Expires: 1973-03-26
Abstract
No abstract record available.
Inventors
- 👤 Roger S Estey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:30
CPC Classifications
F; F41; F41G; F41G7/00; F41G7/20; F41G7/22; F41G7/2253; F41G7/2213; F41G7/2273; F41G7/2293
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1942604A
Cited
US1998948A
Cited
US2369622A
Cited
US2403387A
Cited
US2421085A
Cited
US2421012A
Cited
US2557096A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-13 | 1964-06-13 | 1964-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-13 | 1968-06-13 | 1968-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-13 | 1972-06-13 | 1972-12-13 | $7700.00 | Window Closed / Lapsed |