US2821859A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air bearing gyro and pickup
Assignee: Individual
•
Filing: 1953-03-16
•
Granted: 1958-02-04
•
Expires: 1973-03-16
Abstract
No abstract record available.
Inventors
- 👤 Sydney R Crockett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:50
CPC Classifications
G; G01; G01C; G01C19/00; G01C19/02; G01C19/42; Y; Y10; Y10T; Y10T74/00; Y10T74/12; Y10T74/1261; Y10T74/1279
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1864801A
Cited
US1986807A
Cited
US1841606A
Cited
US1978425A
Cited
US2086897A
Cited
US2142018A
Cited
US2534824A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-02-03 | 1961-08-05 | 1962-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-03 | 1965-08-05 | 1966-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-03 | 1969-08-05 | 1970-02-04 | $7700.00 | Window Closed / Lapsed |