Patent US2490976A successfully refreshed from Google Patents.
US2490976A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making airfoils, helicopter blades, leading edges, and the like
Assignee: Goodyear Aircraft Corp
•
Filing: 1946-11-26
•
Granted: 1949-12-13
•
Expires: 1966-11-26
Abstract
No abstract record available.
Inventors
- 👤 Robert Mayne
- 👤 Jr Harry L Hosterman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:25
CPC Classifications
B; B21; B21D; B21D11/00; B21D11/02; B21D53/00; B21D53/78; G; G01; G01G; G01G3/00; G01G3/02; G01G3/04; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49316; Y10T29/49332
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1761887A
Cited
US1761888A
Cited
US1816594A
Cited
US2163531A
Cited
US2301960A
Cited
US2326470A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-12-12 | 1953-06-13 | 1953-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-12 | 1957-06-13 | 1957-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-12 | 1961-06-13 | 1961-12-13 | $7700.00 | Window Closed / Lapsed |