US1465593A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Feathering mechanism for paddle-type stream motors and propellers
Assignee: Individual
•
Filing: 1921-09-30
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Granted: 1923-08-21
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Expires: 1941-09-30
Abstract
No abstract record available.
Inventors
- 👤 Barrett John Fitzallan
- 👤 Barrett John Ernest
- 👤 Wyatt Frank Alfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:39
CPC Classifications
F; F03; F03D; F03D3/00; F03D3/06; F03D3/062; F03D3/066; F03D3/067; F03D3/068; F05; F05B; F05B2260/00; F05B2260/50; F05B2260/506; F05B2260/70; F05B2260/72; Y; Y02; Y02E; Y02E10/00; Y02E10/70; Y02E10/74
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) | 1926-08-20 | 1927-02-19 | 1927-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1930-08-20 | 1931-02-19 | 1931-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1934-08-20 | 1935-02-19 | 1935-08-21 | $7700.00 | Window Closed / Lapsed |