US2510575A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Removable flight recording apparatus
Assignee: Individual
•
Filing: 1945-08-13
•
Granted: 1950-06-06
•
Expires: 1965-08-13
Abstract
No abstract record available.
Inventors
- 👤 Claude M Hathaway
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:24
CPC Classifications
G; G01; G01D; G01D15/00; G01D15/28; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19219; Y10T74/19358; Y10T74/19367
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1193174A
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US713945A
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US2153317A
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US2414976A
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US2389828A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-06-05 | 1953-12-05 | 1954-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-06-05 | 1957-12-05 | 1958-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-06-05 | 1961-12-05 | 1962-06-06 | $7700.00 | Window Closed / Lapsed |