Patent US2581625A successfully refreshed from Google Patents.
US2581625A
Expired / Lapsed
US
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Means for reducing propeller vibrational effects
Assignee: Consolidated Vultee Aircraft Corp
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Filing: 1946-12-17
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Granted: 1952-01-08
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Expires: 1966-12-17
Abstract
No abstract record available.
Inventors
- 👤 Merle C Brady
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:11
CPC Classifications
B; B64; B64C; B64C11/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1853317A
Cited
US1972005A
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US2095626A
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US1991832A
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US2160066A
Cited
US2111326A
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US2382817A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-01-07 | 1955-07-09 | 1956-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-07 | 1959-07-09 | 1960-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-07 | 1963-07-09 | 1964-01-08 | $7700.00 | Window Closed / Lapsed |