US2569346A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Twin propeller marine motor propulsion and steering unit
Assignee: Individual
•
Filing: 1947-07-24
•
Granted: 1951-09-25
•
Expires: 1967-07-24
Abstract
No abstract record available.
Inventors
- 👤 John J Shively
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:43
CPC Classifications
F; F02; F02B; F02B61/00; F02B61/04; F02B61/045; B; B63; B63H; B63H20/00; B63H20/001; B63H20/002; B63H20/08; B63H20/10; B63H20/12; B63H20/32; B63H20/34; B63H21/00; B63H21/12; B63H21/14; B63H21/21; B63H21/213; B63H23/00; B63H23/02; B63H23/06; B63H5/00; B63H5/07; B63H5/08; F01; F01M; F01M11/00; F01M11/02; F01P; F01P3/00; F01P3/20; F01P3/202; F16; F16N; F16N7/00; F16N7/36; F16N7/366; F01P2060/00; F01P2060/04; F02B63/00; F02B63/04; F02B63/044; F02B2063/046
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1091257A
Cited
US1446775A
Cited
US1958997A
Cited
US2253757A
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US2351050A
Cited
US2386362A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-09-24 | 1955-03-26 | 1955-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-09-24 | 1959-03-26 | 1959-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-09-24 | 1963-03-26 | 1963-09-25 | $7700.00 | Window Closed / Lapsed |