US2581845A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming fin vibration damper
Assignee: UNITED AIRERAFT Corp
•
Filing: 1948-10-02
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Granted: 1952-01-08
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Expires: 1968-10-02
Abstract
No abstract record available.
Inventors
- 👤 Phillip N Elliott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:33
CPC Classifications
F; F16; F16F; F16F15/00; F16F15/02; F16F15/04; F16F15/08; F02; F02F; F02F1/00; F02F1/02; F02F1/04; F02F1/06; Y; Y10; Y10T; Y10T156/00; Y10T156/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB462615A
Cited
US817993A
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US1578793A
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US1739246A
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US1913328A
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US2218351A
Cited
US2253025A
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US2351329A
Cited
US2455708A
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 |