US3138348A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Helicopter mounted parachute
Assignee: Individual
•
Filing: 1961-05-15
•
Granted: 1964-06-23
•
Expires: 1981-05-15
Abstract
No abstract record available.
Inventors
- 👤 Stahmer Bernhardt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 04:37
CPC Classifications
B; B64; B64D; B64D25/00; B64D25/08; B64D25/12; B64C; B64C27/00; B64C27/006
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1678537A
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US1749965A
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US1940950A
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US2111886A
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US2665093A
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DE870952C
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US2699306A
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DE940508C
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US2812147A
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US2829846A
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US3032356A
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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) | 1967-06-23 | 1967-12-23 | 1968-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-23 | 1971-12-23 | 1972-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-23 | 1975-12-23 | 1976-06-23 | $7700.00 | Window Closed / Lapsed |