US1853890A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Propeller
Assignee: Individual
•
Filing: 1931-12-03
•
Granted: 1932-04-12
•
Expires: 1951-12-03
Abstract
No abstract record available.
Inventors
- 👤 Augner Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:21
CPC Classifications
B; B63; B63B; B63B3/00; B63B3/14; B63B3/40; B63H; B63H1/00; B63H1/02; B63H1/12; B63H2001/122; B63H2001/125; B63H5/00; B63H5/07; B63H5/08; B63H5/10; B63H2005/106; B63H23/00; B63H23/02; B63H2023/0283; B63H23/06; B63H2023/062; B63H2023/067; B63H23/32; B63H23/34; B63H2023/342
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) | 1935-04-12 | 1935-10-12 | 1936-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-04-12 | 1939-10-12 | 1940-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-04-12 | 1943-10-12 | 1944-04-12 | $7700.00 | Window Closed / Lapsed |