Patent US3709469A successfully refreshed from Google Patents.
Patent US2798683A successfully refreshed from Google Patents.
US2798683A
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Delayed release mechanism for parachutes
Assignee: Individual
•
Filing: 1952-03-19
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Granted: 1957-07-09
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Expires: 1972-03-19
Abstract
No abstract record available.
Inventors
- 👤 Wayne A Swenson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:17
CPC Classifications
F; F42; F42B; F42B10/00; F42B10/32; F42B10/48; F42B10/56
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1985890A
Cited
US2036279A
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US2124876A
Cited
GB581726A
Cited
GB599385A
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US2521516A
Cited
US2582113A
Cited
US2562459A
Cited
US2581645A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-08 | 1961-01-07 | 1961-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-08 | 1965-01-07 | 1965-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-08 | 1969-01-07 | 1969-07-09 | $7700.00 | Window Closed / Lapsed |