US2581645A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Delay opening parachute pack and knife plunger releasing assembly therefor
Assignee: Reconstruction Finance Corp
•
Filing: 1949-07-14
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Granted: 1952-01-08
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Expires: 1969-07-14
Abstract
No abstract record available.
Inventors
- 👤 Leonard P Frieder
- 👤 Walter S Finken
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:15
CPC Classifications
F; F42; F42B; F42B3/00; F42B3/006; B; B64; B64D; B64D1/00; B64D1/02; Y; Y10; Y10S; Y10S30/00; Y10S30/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-01-07 | 1955-07-09 | 1956-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-07 | 1959-07-09 | 1960-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-07 | 1963-07-09 | 1964-01-08 | $7700.00 | Window Closed / Lapsed |