Patent US2465538A successfully refreshed from Google Patents.
US2465538A
Expired / Lapsed
US
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Power-transmission means
Assignee: HELIEOPTERS Inc
•
Filing: 1944-05-29
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Granted: 1949-03-29
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Expires: 1964-05-29
Abstract
No abstract record available.
Inventors
- 👤 Jensen Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:53
CPC Classifications
F; F16; F16D; F16D23/00; F16D23/02; F16D23/04; F16D23/06; F16D2023/0618; F16D2023/0643
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1250687A
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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) | 1952-03-28 | 1952-09-27 | 1953-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-03-28 | 1956-09-27 | 1957-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-03-28 | 1960-09-27 | 1961-03-29 | $7700.00 | Window Closed / Lapsed |