US3123249A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Venting arrangements for storage tanks
Assignee: —
•
Filing: —
•
Granted: 1964-03-03
•
Expires: 1981-03-03
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:00
CPC Classifications
B; B65; B65D; B65D90/00; B65D90/22; B65D90/32; B65D90/34; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3115; Y10T137/3127; Y10T137/313; Y10T137/8593; Y10T137/86292; Y10T137/86324
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
76 words
IN COMBINATION, A CONE-ROOF TANK FOR STORING A VOLATILE LIQUID, A VENT VALVE OF THE VACUUM-PRESSURE TYPE MOUNTED IN THE CONE-ROOF, A CONDUIT HAVING ONE END SECURED TO SAID VALVE AND HAVING ITS OTHER END EXTENDING BELOW THE SURFACE OF THE STORED LIQUID, AND MEANS OPERATING IN RESPONSE TO AN INCREASE OF PRESSURE IN THE VAPOR SPACE ABOVE THE STORED LIQUID TO LIFT SAID OTHER END OF SAID CONDUIT ABOVE THE SURFACE OF THE STORED LIQUID.
References Cited (Backward Citations)
US290558A
Cited
US1064102A
Cited
US1136230A
Cited
US1992875A
Cited
US2157579A
Cited
US2338044A
Cited
US2702786A
Cited
US2679333A
Cited
US2909190A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-03-03 | 1967-09-02 | 1968-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-03 | 1971-09-02 | 1972-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-03 | 1975-09-02 | 1976-03-03 | $7700.00 | Window Closed / Lapsed |