Patent US2807161A successfully refreshed from Google Patents.
US2807161A
Expired / Lapsed
US
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Means for checking landing gear tire pressures and for freeing jammed landing gear
Assignee: Individual
•
Filing: 1954-05-12
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Granted: 1957-09-24
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Expires: 1974-05-12
Abstract
No abstract record available.
Inventors
- 👤 Sylvester V Wirant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:04
CPC Classifications
B; B64; B64C; B64C25/00; B64C25/32; B64C25/34; B64C25/36
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US660445A
Cited
US1894490A
Cited
US2115701A
Cited
US2184260A
Cited
US2152159A
Cited
GB542910A
Cited
US2384437A
Cited
US2685197A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-23 | 1961-03-25 | 1961-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-23 | 1965-03-25 | 1965-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-23 | 1969-03-25 | 1969-09-24 | $7700.00 | Window Closed / Lapsed |