US2044293A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing propellers
Assignee: Alcoa Corp
•
Filing: 1929-08-19
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Granted: 1936-06-16
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Expires: 1949-08-19
Abstract
No abstract record available.
Inventors
- 👤 Alfred A Handler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 02:21
CPC Classifications
B; B21; B21H; B21H7/00; B21H7/16; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49316; Y10T29/49332
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1939-06-16 | 1939-12-16 | 1940-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-06-16 | 1943-12-16 | 1944-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-06-16 | 1947-12-16 | 1948-06-16 | $7700.00 | Window Closed / Lapsed |