US3129682A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Propulsion arrangement for merchant ship
Assignee: John J Mcmullen Associates Inc
•
Filing: 1961-12-13
•
Granted: 1964-04-21
•
Expires: 1981-12-13
Abstract
No abstract record available.
Inventors
- 👤 Norman W Penney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:38
CPC Classifications
B; B63; B63H; B63H21/00; B63H21/12; B63H21/16; B63B; B63B11/00; B63B11/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB190504400A
Cited
US919343A
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US1443368A
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US1431924A
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US1542165A
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GB595945A
Cited
US2640317A
Cited
US2632997A
Cited
US2663141A
Cited
US2914918A
Cited
US2912824A
Cited
US3019757A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-04-21 | 1967-10-21 | 1968-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-21 | 1971-10-21 | 1972-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-21 | 1975-10-21 | 1976-04-21 | $7700.00 | Window Closed / Lapsed |