US3136279A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Back mounted underwater propulsion assembly for divers
Assignee: Individual
•
Filing: 1961-12-14
•
Granted: 1964-06-09
•
Expires: 1981-12-14
Abstract
No abstract record available.
Inventors
- 👤 Boatwright Albert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:38
CPC Classifications
A; A63; A63B; A63B35/00; A63B35/08; A63B35/12; A63B35/125
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
89 words
A BACK MOUNTED UNDERWATER PROPULSION ASSEMBLY FOR DIVERS COMPRISING A BACK MOUNTING PLATE HAVING UPPER AND LOWER MARGINAL EDGE PORTIONS AND ADAPTED TO CONFORM TO AND OVERLIE THE BACK OF A DIVER, SAID UPPER MARGINAL EDGE PORTION INCLUDING A PAIR OF LATERALLY SPACED INVERTED U-SHAPED FORWARDLY PROJECTING AND DOWNWARDLY OPENING SHOULDER HANGER PORTIONS, MEANS ON SAID BACK MOUNTING PLATE ADAPTED TO HAVE AT LEAST ONE COMPRESSED FLUID TANK SECURED THERETO, A GENERALLY J-SHAPED FORWARDLY PROJECTING AND UPWARDLY OPENING CROTCH ENGAGING MEMBER CARRIED BY THE LOWER EDGE PORTION OF SAID
References Cited (Backward Citations)
US617049A
Cited
US1310253A
Cited
US1065385A
Cited
US1586595A
Cited
US1712620A
Cited
FR1223266A
Cited
US3014448A
Cited
US3048140A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-09 | 1967-12-09 | 1968-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-09 | 1971-12-09 | 1972-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-09 | 1975-12-09 | 1976-06-09 | $7700.00 | Window Closed / Lapsed |