Patent US2765748A successfully refreshed from Google Patents.
Patent US2437701A successfully refreshed from Google Patents.
US2437701A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aircraft propeller
Assignee: Individual
•
Filing: 1943-06-07
•
Granted: 1948-03-16
•
Expires: 1963-06-07
Abstract
No abstract record available.
Inventors
- 👤 Howard M Mccoy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:37
CPC Classifications
B; B64; B64C; B64C11/00; B64C11/30; B64C11/44
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1483536A
Cited
US1726726A
Cited
US2127687A
Cited
FR776377A
Cited
US2117891A
Cited
DE703319C
Cited
US2164489A
Cited
US2133593A
Cited
US2233822A
Cited
US2271435A
Cited
US2225408A
Cited
CH217669A
Cited
US2356772A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-03-16 | 1951-09-15 | 1952-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-03-16 | 1955-09-15 | 1956-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-03-16 | 1959-09-15 | 1960-03-16 | $7700.00 | Window Closed / Lapsed |