US2539010A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aircraft propelling device
Assignee: Individual
•
Filing: 1946-07-09
•
Granted: 1951-01-23
•
Expires: 1966-07-09
Abstract
No abstract record available.
Inventors
- 👤 Homer M Cox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:42
CPC Classifications
B; B64; B64F; B64F1/00; B64F1/22; Y; Y10; Y10S; Y10S180/00; Y10S180/904
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US627066A
Cited
US1313693A
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US770936A
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US1285343A
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US1348568A
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US2172126A
Cited
US2409552A
Cited
US2376621A
Cited
US2414859A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-01-22 | 1954-07-24 | 1955-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-22 | 1958-07-24 | 1959-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-22 | 1962-07-24 | 1963-01-23 | $7700.00 | Window Closed / Lapsed |