Patent US3147761A successfully refreshed from Google Patents.
US3147761A
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US
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Regulator for underwater breathing apparatus
Assignee: Sportsways Inc
•
Filing: 1961-12-19
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Granted: 1964-09-08
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Expires: 1981-12-19
Abstract
No abstract record available.
Inventors
- 👤 Samuel G Lecocq
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:23
CPC Classifications
A; A62; A62B; A62B9/00; A62B9/02; B; B63; B63C; B63C11/00; B63C11/02; B63C11/18; B63C11/22; B63C11/2209; Y; Y10; Y10T; Y10T137/00; Y10T137/1842; Y10T137/2036; Y10T137/7722; Y10T137/7837; Y10T137/7876; Y10T137/7877
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2398503A
Cited
US2634748A
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US2764151A
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US2860658A
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US3018790A
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US2954792A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-09-08 | 1968-03-09 | 1968-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-08 | 1972-03-09 | 1972-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-08 | 1976-03-09 | 1976-09-08 | $7700.00 | Window Closed / Lapsed |