US2417022A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Windmill
Assignee: Individual
•
Filing: 1945-05-23
•
Granted: 1947-03-04
•
Expires: 1965-05-23
Abstract
No abstract record available.
Inventors
- 👤 Stagg Allen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:49
CPC Classifications
F; F03; F03D; F03D7/00; F03D7/02; F03D7/0204; F03D7/0208; F03D7/0212; F03D13/00; F03D13/20; F03D15/00; F03D15/10; F03D80/00; F03D80/70; Y; Y02; Y02E; Y02E10/00; Y02E10/70; Y02E10/72; Y02E10/728
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US217147A
Cited
US223379A
Cited
US361894A
Cited
US556803A
Cited
US689635A
Cited
US781449A
Cited
US1722845A
Cited
FR715089A
Cited
US2247929A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-03-03 | 1950-09-02 | 1951-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-03-03 | 1954-09-02 | 1955-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-03-03 | 1958-09-02 | 1959-03-04 | $7700.00 | Window Closed / Lapsed |