Patent US2641424A successfully refreshed from Google Patents.
US2641424A
Expired / Lapsed
US
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Variable diameter parachute canopy
Assignee: MEAD AVIAT EQUIPMENT Co
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Filing: 1950-04-05
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Granted: 1953-06-09
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Expires: 1970-04-05
Abstract
No abstract record available.
Inventors
- 👤 Harold J Moran
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:51
CPC Classifications
B; B64; B64D; B64D17/00; B64D17/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1137541A
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US700520A
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US836226A
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US1273553A
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US1328425A
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US1521315A
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US2089140A
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US2356493A
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US2358798A
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US2501670A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-08 | 1956-12-08 | 1957-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-08 | 1960-12-08 | 1961-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-08 | 1964-12-08 | 1965-06-09 | $7700.00 | Window Closed / Lapsed |