US2689541A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Outboard motor propeller and pump
Assignee: Individual
•
Filing: 1951-12-28
•
Granted: 1954-09-21
•
Expires: 1971-12-28
Abstract
No abstract record available.
Inventors
- 👤 Martin L Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:21
CPC Classifications
B; B63; B63H; B63H1/00; B63H1/02; B63H1/12; B63H1/14; B63H1/28; B63B; B63B13/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US239046A
Cited
US496812A
Cited
US1818991A
Cited
US1742938A
Cited
US1900180A
Cited
US2151225A
Cited
US2604867A
Cited
US2530664A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-09-20 | 1958-03-22 | 1958-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-20 | 1962-03-22 | 1962-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-20 | 1966-03-22 | 1966-09-21 | $7700.00 | Window Closed / Lapsed |