US2484273A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Propeller unit for aircraft
Assignee: Individual
•
Filing: 1940-05-25
•
Granted: 1949-10-11
•
Expires: 1960-05-25
Abstract
No abstract record available.
Inventors
- 👤 Desmoulins Emile Hyacinthe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:30
CPC Classifications
B; B64; B64D; B64D35/00; B64D35/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB190709413A
Cited
US1291126A
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US1431683A
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US1654432A
Cited
US1755804A
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US1992333A
Cited
FR722339A
Cited
GB421889A
Cited
US2085483A
Cited
US2067023A
Cited
US2154532A
Cited
US2208156A
Cited
US2262797A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-10-10 | 1953-04-11 | 1953-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-10-10 | 1957-04-11 | 1957-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-10-10 | 1961-04-11 | 1961-10-11 | $7700.00 | Window Closed / Lapsed |