US2937826A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for altering the leading edge shape of an airfoil
Assignee: Goodrich Corp
•
Filing: 1955-11-18
•
Granted: 1960-05-24
•
Expires: 1975-11-18
Abstract
No abstract record available.
Inventors
- 👤 Johnson Donn Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:12
CPC Classifications
B; B64; B64C; B64C3/00; B64C3/38; B64C3/44; B64C3/46; Y; Y02; Y02T; Y02T50/00; Y02T50/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1942867A
Cited
US2168328A
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US2378528A
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US2271760A
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US2320017A
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US2306759A
Cited
US2436889A
Cited
US2504684A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-24 | 1963-11-23 | 1964-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-24 | 1967-11-23 | 1968-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-24 | 1971-11-23 | 1972-05-24 | $7700.00 | Window Closed / Lapsed |