Patent US2566023A successfully refreshed from Google Patents.
US2566023A
Expired / Lapsed
US
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Sectional oar
Assignee: Individual
•
Filing: 1947-02-21
•
Granted: 1951-08-28
•
Expires: 1967-02-21
Abstract
No abstract record available.
Inventors
- 👤 Herbert J Gagnon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:58
CPC Classifications
B; B63; B63H; B63H16/00; B63H16/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1566648A
Cited
US684868A
Cited
US709667A
Cited
US805033A
Cited
CH103809A
Cited
US1817414A
Cited
FR790895A
Cited
US2259678A
Cited
US2353662A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-08-27 | 1955-02-26 | 1955-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-27 | 1959-02-26 | 1959-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-27 | 1963-02-26 | 1963-08-28 | $7700.00 | Window Closed / Lapsed |