Patent US2477637A successfully refreshed from Google Patents.
US2477637A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aircraft
Assignee: Individual
•
Filing: 1941-11-14
•
Granted: 1949-08-02
•
Expires: 1961-11-14
Abstract
No abstract record available.
Inventors
- 👤 Mercier Pierre Ernest
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:27
CPC Classifications
F; F02; F02K; F02K5/00; F02K5/02; F02K5/023; B; B64; B64C; B64C21/00; B64C21/01; B64C21/02; B64C21/06; B64C2230/00; B64C2230/04; B64C2230/06; B64D; B64D33/00; B64D33/02; B64D2033/0226; Y; Y02; Y02T; Y02T50/00; Y02T50/10
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
GB272661A
Cited
GB107574A
Cited
US1874278A
Cited
US2008424A
Cited
US1972190A
Cited
GB390363A
Cited
GB406713A
Cited
US1922167A
Cited
US2041792A
Cited
US2041794A
Cited
US2104144A
Cited
US2049573A
Cited
DE679023C
Cited
GB512064A
Cited
US2176809A
Cited
US2277173A
Cited
US2272664A
Cited
US2274442A
Cited
GB542653A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-08-01 | 1953-01-31 | 1953-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-08-01 | 1957-01-31 | 1957-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-08-01 | 1961-01-31 | 1961-08-02 | $7700.00 | Window Closed / Lapsed |