US3428018A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Boat propulsion unit and propeller assembly
Assignee: Individual
•
Filing: 1965-08-06
•
Granted: 1969-02-18
•
Expires: 1985-08-06
Abstract
No abstract record available.
Inventors
- 👤 Floyd P Ellzey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:01
CPC Classifications
B; B63; B63H; B63H20/00; B63H20/14; B63H20/22; B63H20/001; B63H20/002; B63H20/08; B63H20/12; B63H20/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US268686A
Cited
US1822573A
Cited
US2064195A
Cited
US2114633A
Cited
US2496434A
Cited
US3054376A
Cited
US3183880A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-18 | 1972-08-19 | 1973-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-18 | 1976-08-19 | 1977-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-18 | 1980-08-19 | 1981-02-18 | $7700.00 | Window Closed / Lapsed |