US3057589A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aerial device having rotor for retarding descent
Assignee: Kaman Aircraft Corp
•
Filing: 1958-03-14
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Granted: 1962-10-09
•
Expires: 1978-03-14
Abstract
No abstract record available.
Inventors
- 👤 Derek J Nutkins
- 👤 Clifford B Packard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:16
CPC Classifications
B; B64; B64D; B64D19/00; B64D19/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1036122A
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US1464339A
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US1880586A
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US1964016A
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US2405415A
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US2468795A
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US2509481A
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US2545736A
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US2526451A
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US2746207A
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US2870710A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-10-08 | 1966-04-09 | 1966-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-08 | 1970-04-09 | 1970-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-08 | 1974-04-09 | 1974-10-09 | $7700.00 | Window Closed / Lapsed |