US2711708A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable power paddle wheel unit for row type boats
Assignee: Individual
•
Filing: 1952-04-23
•
Granted: 1955-06-28
•
Expires: 1972-04-23
Abstract
No abstract record available.
Inventors
- 👤 Leo L Thornburg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:16
CPC Classifications
B; B63; B63H; B63H5/00; B63H5/02; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20576; Y10T74/20636; Y10T74/20672; Y10T74/2069
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US126204A
Cited
US239438A
Cited
US307400A
Cited
US889198A
Cited
US1125325A
Cited
US1330842A
Cited
US1464038A
Cited
US1823109A
Cited
FR986890A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-06-27 | 1958-12-27 | 1959-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-06-27 | 1962-12-27 | 1963-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-06-27 | 1966-12-27 | 1967-06-28 | $7700.00 | Window Closed / Lapsed |