US2157281A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Propelling device
Assignee: BREV ET PROCEDES COANADA SOC C
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Filing: 1936-08-13
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Granted: 1939-05-09
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Expires: 1956-08-13
Abstract
No abstract record available.
Inventors
- 👤 Coanda Henri
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:21
CPC Classifications
B; B64; B64C; B64C9/00; B64C9/14; B64C9/22; B64C9/24; B60; B60K; B60K16/00; B64C21/00; B64C21/02; B64C21/04; B64D; B64D27/00; B64D27/02; F; F03; F03D; F03D9/00; F03D9/30; F03D9/32; Y; Y02; Y02E; Y02E10/00; Y02E10/70; Y02E10/72; Y02E10/728; Y02T; Y02T50/00; Y02T50/10; Y02T50/40; Y10; Y10S; Y10S239/00; Y10S239/07; Y10S411/00; Y10S411/92; Y10S415/00; Y10S415/914
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) | 1942-05-08 | 1942-11-07 | 1943-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-05-08 | 1946-11-07 | 1947-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-05-08 | 1950-11-07 | 1951-05-09 | $7700.00 | Window Closed / Lapsed |