US3301209A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Submersible vessels
Assignee: BAJAMAR OF HOUSTON
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Filing: 1964-12-01
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Granted: 1967-01-31
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Expires: 1984-12-01
Abstract
No abstract record available.
Inventors
- 👤 Jr Patton H Caldwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:47
CPC Classifications
B; B63; B63G; B63G8/00; B63G8/14; B63G8/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
IN A SUBMERSIBLE VESSEL, THE IMPROVEMENT WHICH COMPRISES: (A) AT LEAST ONE RIGID CHAMBER SECURED TO THE VESSEL AND CONTAINING A LIQUID; (B) AT LEAST ONE PARTIALLY DISTENSIBLE CHAMBER COMMUNICATING WITH SAID RIGID CHAMBER AND BEING EXPOSED TO THE SEA WATER THAT NORMALLY SURROUNDS THE VESSEL; (C) MEANS FOR TRANSFERRING AT LEAST A PORTION OF THE LIQUID BETWEEN SAID CHAMBERS TO VARY THE VOLUME OF SAID DISTENSIBLE CHAMBER AND THUS THE BUOYANCY OF THE VESSEL;
Claim 2
Dependent Claim
75 words
IN A SUBMERSIBLE VESSEL, THE IMPROVEMENT WHICH COMPRISES: (A) AT LEAST ONE RIGID CHAMBER SECURED TO THE VESSEL AND CONTAINING A LIQUID; (B) AT LEAST ONE PARTIALLY DISTENSIBLE CHAMBER COMMUNICATING WITH SAID RIGID CHAMBER AND BEING EXPOSED TO THE SEA WATER THAT NORMALLY SURROUNDS THE VESSEL; (C) MEANS FOR TRANSFERRING AT LEAST A PORTION OF THE LIQUID BETWEEN SAID CHAMBERS TO VARY THE VOLUME OF SAID DISTENSIBLE CHAMBER AND THUS THE BUOYANCY OF THE VESSEL;
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-30 | 1970-08-01 | 1971-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-30 | 1974-08-01 | 1975-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-30 | 1978-08-01 | 1979-01-31 | $7700.00 | Window Closed / Lapsed |