US2447628A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Propeller vibration damping means
Assignee: RTX Corp
•
Filing: 1942-06-06
•
Granted: 1948-08-24
•
Expires: 1962-06-06
Abstract
No abstract record available.
Inventors
- 👤 John G Baker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:35
CPC Classifications
F; F16; F16F; F16F15/00; F16F15/10; F16F15/16; B; B64; B64C; B64C11/00; B64C11/008
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1458814A
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FR660674A
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GB332646A
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US1952798A
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US1930380A
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US2067109A
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US2144428A
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FR48916E
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US2112797A
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US2245251A
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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) | 1951-08-24 | 1952-02-23 | 1952-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-08-24 | 1956-02-23 | 1956-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-08-24 | 1960-02-23 | 1960-08-24 | $7700.00 | Window Closed / Lapsed |