US2431111A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wind motor
Assignee: Individual
•
Filing: 1943-12-16
•
Granted: 1947-11-18
•
Expires: 1963-12-16
Abstract
No abstract record available.
Inventors
- 👤 Brie Stanley R Du
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:54
CPC Classifications
F; F03; F03D; F03D3/00; F03D3/06; F03D3/062; F03D3/02; Y; Y02; Y02E; Y02E10/00; Y02E10/70; Y02E10/74; Y10; Y10S; Y10S415/00; Y10S415/905; Y10S415/907
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1027501A
Cited
US1367766A
Cited
US1441774A
Cited
US1654165A
Cited
US1770328A
Cited
FR631431A
Cited
US1963912A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-11-17 | 1951-05-19 | 1951-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-11-17 | 1955-05-19 | 1955-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-11-17 | 1959-05-19 | 1959-11-18 | $7700.00 | Window Closed / Lapsed |