Patent US2946540A successfully refreshed from Google Patents.
US2946540A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Jet propelled aircraft
Assignee: Sebac Nouvelle S A
•
Filing: 1954-07-21
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Granted: 1960-07-26
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Expires: 1974-07-21
Abstract
No abstract record available.
Inventors
- 👤 Coanda Henri
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:41
CPC Classifications
B; B64; B64C; B64C21/00; B64C21/02; B64C21/04; B64C2230/00; B64C2230/04; B64C2230/06; B64C2230/16; Y; Y02; Y02T; Y02T50/00; Y02T50/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1887148A
Cited
US1903818A
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US2052869A
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US2252657A
Cited
GB518663A
Cited
US2271321A
Cited
US2396911A
Cited
US2383385A
Cited
FR980347A
Cited
US2650666A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-07-26 | 1964-01-25 | 1964-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-26 | 1968-01-25 | 1968-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-26 | 1972-01-25 | 1972-07-26 | $7700.00 | Window Closed / Lapsed |