US1099083A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-rotating propeller.
Assignee: Individual
•
Filing: 1910-12-17
•
Granted: 1914-06-02
•
Expires: 1930-12-17
Abstract
No abstract record available.
Inventors
- 👤 Henry A Duc Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:26
CPC Classifications
B; B64; B64C; B64C27/00; B64C27/04; B64C27/12; B64C27/16; B64C27/18
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) | 1917-06-01 | 1917-12-01 | 1918-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1921-06-01 | 1921-12-01 | 1922-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1925-06-01 | 1925-12-01 | 1926-06-02 | $7700.00 | Window Closed / Lapsed |