US2728979A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gyroscopic control instrument
Assignee: Individual
•
Filing: 1951-05-12
•
Granted: 1956-01-03
•
Expires: 1971-05-12
Abstract
No abstract record available.
Inventors
- 👤 Jr Thomas O Summers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:11
CPC Classifications
G; G01; G01C; G01C19/00; G01C19/02; G01C19/44; Y; Y10; Y10T; Y10T74/00; Y10T74/12; Y10T74/1221
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB365188A
Cited
US2137974A
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US2188606A
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US2190390A
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US2297265A
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US2423270A
Cited
US2507451A
Cited
US2505021A
Cited
US2608868A
Cited
US2555165A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-02 | 1959-07-04 | 1960-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-02 | 1963-07-04 | 1964-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-02 | 1967-07-04 | 1968-01-03 | $7700.00 | Window Closed / Lapsed |