US2631680A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Articulated blade
Assignee: Curtiss Wright Corp
•
Filing: 1950-05-29
•
Granted: 1953-03-17
•
Expires: 1970-05-29
Abstract
No abstract record available.
Inventors
- 👤 Compte Frank M Le
- 👤 Edward S Bucher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:15
CPC Classifications
B; B64; B64C; B64C11/00; B64C11/02; B64C11/04; Y; Y10; Y10T; Y10T403/00; Y10T403/45; Y10T403/455
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1400033A
Cited
US1870361A
Cited
FR807288A
Cited
US2235605A
Cited
US2245251A
Cited
US2297142A
Cited
US2471578A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-16 | 1956-09-15 | 1957-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-16 | 1960-09-15 | 1961-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-16 | 1964-09-15 | 1965-03-17 | $7700.00 | Window Closed / Lapsed |