Patent US3369368A successfully refreshed from Google Patents.
US3369368A
Expired / Lapsed
US
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Diving structure
Assignee: Union Carbide Corp
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Filing: 1967-05-11
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Granted: 1968-02-20
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Expires: 1987-05-11
Abstract
No abstract record available.
Inventors
- 👤 Hugh D Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:11
CPC Classifications
B; B63; B63C; B63C11/00; B63C11/34; B63C11/36
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
A DIVING STRUCTURE COMPRISING A PAIR OF SPHERICAL UNITS RIDIDLY INTERCONNECTED BY A COMMON HATCHWAY COMMUNICATING THE INTERIORS THEREOF WITH EACH OTHER; HATCH MEANS AT EACH END OF THE HATCHWAY FOR SELECTIVELY SEALING OFF THE INTERIOR OF EACH FROM THE OTHER; SEPARATE PRESSURE ADJUSTING AND MAINTAINING MEANS ASSOCIATED WITH EACH OF THE UNITS FOR REGULATING THE BREATHING GAS PRESSURE WITHIN EACH UNIT, AND A SEPARATE HATCHWAY INCLUDING A HATCH MEANS COMMUNICATING AT LEAST ONE OF THE UNITS WITH THE EXTERIOR FOR DIVER INGRESS AND EGRESS.
Claim 2
Dependent Claim
85 words
A DIVING STRUCTURE COMPRISING A PAIR OF SPHERICAL UNITS RIDIDLY INTERCONNECTED BY A COMMON HATCHWAY COMMUNICATING THE INTERIORS THEREOF WITH EACH OTHER; HATCH MEANS AT EACH END OF THE HATCHWAY FOR SELECTIVELY SEALING OFF THE INTERIOR OF EACH FROM THE OTHER; SEPARATE PRESSURE ADJUSTING AND MAINTAINING MEANS ASSOCIATED WITH EACH OF THE UNITS FOR REGULATING THE BREATHING GAS PRESSURE WITHIN EACH UNIT, AND A SEPARATE HATCHWAY INCLUDING A HATCH MEANS COMMUNICATING AT LEAST ONE OF THE UNITS WITH THE EXTERIOR FOR DIVER INGRESS AND EGRESS.
References Cited (Backward Citations)
US617750A
Cited
US962019A
Cited
US1008301A
Cited
GB191412569A
Cited
US1134963A
Cited
US1795408A
Cited
US2585712A
Cited
US2924947A
Cited
US2991489A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-02-19 | 1971-08-21 | 1972-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-19 | 1975-08-21 | 1976-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-19 | 1979-08-21 | 1980-02-20 | $7700.00 | Window Closed / Lapsed |