Patent US3469557A successfully refreshed from Google Patents.
US3469557A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Channel stern power boat
Assignee: DONALD L WOLLARD
•
Filing: 1967-05-01
•
Granted: 1969-09-30
•
Expires: 1987-05-01
Abstract
No abstract record available.
Inventors
- 👤 Donald L Wollard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:09
CPC Classifications
B; B63; B63H; B63H5/00; B63H5/07; B63H5/16; B63B; B63B1/00; B63B1/16; B63B1/18; B63B1/20; B63H20/00; B63H20/32; B63H20/34; B63B2001/203
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1121006A
Cited
US1163075A
Cited
US1163076A
Cited
US2269801A
Cited
US3066639A
Cited
US3239856A
Cited
US3343368A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-29 | 1973-03-31 | 1973-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-29 | 1977-03-31 | 1977-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-29 | 1981-03-31 | 1981-09-30 | $7700.00 | Window Closed / Lapsed |