US2844120A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Boat construction with well mounted propulsion unit
Assignee: Individual
•
Filing: 1956-05-11
•
Granted: 1958-07-22
•
Expires: 1976-05-11
Abstract
No abstract record available.
Inventors
- 👤 Fred L Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:39
CPC Classifications
B; B63; B63H; B63H5/00; B63H5/07; B63H5/125
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1774956A
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US2156938A
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US2420110A
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US2451781A
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US2507544A
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US2522545A
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US2655891A
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US2633817A
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US2699138A
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US2791981A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-21 | 1962-01-20 | 1962-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-21 | 1966-01-20 | 1966-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-21 | 1970-01-20 | 1970-07-22 | $7700.00 | Window Closed / Lapsed |