US2981073A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Underwater craft
Assignee: AMF Inc
•
Filing: 1956-07-27
•
Granted: 1961-04-25
•
Expires: 1976-07-27
Abstract
No abstract record available.
Inventors
- 👤 Jr Jack D Robinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:47
CPC Classifications
B; B63; B63C; B63C11/00; B63C11/34; B63C11/36; B63C11/42; B63C11/48
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US896361A
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US1409690A
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US2019059A
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US2291940A
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US2359964A
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US2433971A
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US2592176A
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US2519453A
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US2685858A
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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) | 1964-04-24 | 1964-10-24 | 1965-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-24 | 1968-10-24 | 1969-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-24 | 1972-10-24 | 1973-04-25 | $7700.00 | Window Closed / Lapsed |