Patent US3048140A successfully refreshed from Google Patents.
US3048140A
Expired / Lapsed
US
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Underwater propulsion device
Assignee: NEWELL N DAVIS
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Filing: 1960-06-22
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Granted: 1962-08-07
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Expires: 1980-06-22
Abstract
No abstract record available.
Inventors
- 👤 Sr Eugene R Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:19
CPC Classifications
A; A63; A63B; A63B35/00; A63B35/08; A63B35/12; A63B35/125
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2526714A
Cited
US2696077A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-08-06 | 1966-02-05 | 1966-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-06 | 1970-02-05 | 1970-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-06 | 1974-02-05 | 1974-08-07 | $7700.00 | Window Closed / Lapsed |