US2553909A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pilot chute attached to rim of master parachute
Assignee: Reconstruction Finance Corp
•
Filing: 1946-12-27
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Granted: 1951-05-22
•
Expires: 1966-12-27
Abstract
No abstract record available.
Inventors
- 👤 Leonard P Frieder
- 👤 Walter S Finken
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:25
CPC Classifications
B; B64; B64D; B64D17/00; B64D17/62; B64D17/64
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1323983A
Cited
US1273553A
Cited
GB155787A
Cited
US1895999A
Cited
US2028777A
Cited
US2032824A
Cited
US2362488A
Cited
US2410057A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-21 | 1954-11-20 | 1955-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-21 | 1958-11-20 | 1959-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-21 | 1962-11-20 | 1963-05-22 | $7700.00 | Window Closed / Lapsed |