US866369A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Propeller.
Assignee: Individual
•
Filing: 1907-02-23
•
Granted: 1907-09-17
•
Expires: 1927-02-23
Abstract
No abstract record available.
Inventors
- 👤 Arthur W Learnard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:12
CPC Classifications
F; F04; F04D; F04D25/00; F04D25/02; F04D25/08; F04D25/088; B; B63; B63H; B63H1/00; B63H1/02; B63H1/12; B63H1/14; B63H1/20; B63H1/22; B63H1/24
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) | 1910-09-16 | 1911-03-18 | 1911-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1914-09-16 | 1915-03-18 | 1915-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1918-09-16 | 1919-03-18 | 1919-09-17 | $7700.00 | Window Closed / Lapsed |