US2921472A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifugally actuated gyro uncaging mechanism
Assignee: Individual
•
Filing: 1954-09-15
•
Granted: 1960-01-19
•
Expires: 1974-09-15
Abstract
No abstract record available.
Inventors
- 👤 Friedman Donald
- 👤 Bernard L Sandberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 00:03
CPC Classifications
G; G01; G01C; G01C19/00; G01C19/02; G01C19/04; G01C19/26; Y; Y10; Y10T; Y10T74/00; Y10T74/12; Y10T74/1204; Y10T74/1207; Y10T74/1282
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1127403A
Cited
FR861605A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-01-18 | 1963-07-20 | 1964-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-18 | 1967-07-20 | 1968-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-18 | 1971-07-20 | 1972-01-19 | $7700.00 | Window Closed / Lapsed |