Patent US2731802A successfully refreshed from Google Patents.
US2731802A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wacsporran
Assignee: —
•
Filing: —
•
Granted: 1956-01-24
•
Expires: 1973-01-24
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:42
CPC Classifications
F; F17; F17C; F17C13/00; F17C13/04; Y; Y10; Y10T; Y10T137/00; Y10T137/5762; Y10T137/7722; Y10T137/7754
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
A LIQUEFIED PETROLEUM GAS STORAGE SYSTEM COMPRISING A PRESSURE STORAGE VESSEL, A PRESSURE RELIEF VALVE DISPOSED AT LEAST IN PART IN SAID VESSEL AND IN THE PORTION OF SAID VESSEL NORMALLY CONTAINING VAPOR, AN EXHAUST CONDUIT IN COMMUNICATION WITH THE OUTLET OF SAID RELIEF VALVE, A DRAINAGE CONDUIT IN COMMUNICATION WITH SAID EXHAUST CONDUIT, AND A MOTOR VALVE IN COMMUNICATION WITH SAID DRAINAGE CONDUIT TO CONTROL THE FLOW OF SAID PETROLEUM GAS THERETHROUGH.
Claim 2
Dependent Claim
73 words
A LIQUEFIED PETROLEUM GAS STORAGE SYSTEM COMPRISING A PRESSURE STORAGE VESSEL, A PRESSURE RELIEF VALVE DISPOSED AT LEAST IN PART IN SAID VESSEL AND IN THE PORTION OF SAID VESSEL NORMALLY CONTAINING VAPOR, AN EXHAUST CONDUIT IN COMMUNICATION WITH THE OUTLET OF SAID RELIEF VALVE, A DRAINAGE CONDUIT IN COMMUNICATION WITH SAID EXHAUST CONDUIT, AND A MOTOR VALVE IN COMMUNICATION WITH SAID DRAINAGE CONDUIT TO CONTROL THE FLOW OF SAID PETROLEUM GAS THERETHROUGH.
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) | 1959-01-23 | 1959-07-25 | 1960-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-23 | 1963-07-25 | 1964-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-23 | 1967-07-25 | 1968-01-24 | $7700.00 | Window Closed / Lapsed |