US2732069A
Expired / Lapsed
US
⏱️ 0.0 years remaining
henderson
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
2026-10-23 16:13
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/68; C02F1/685; C02F1/686; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2514; Y10T137/2531
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
A LIQUID FEED APPARATUS FOR FEEDING AN ADDITIVE LIQUID TO A SECOND LIQUID WHICH COMPRISES A PUMP ADAPTED TO BE CONNECTED TO A SOURCE FOR SAID ADDITIVE LIQUID AND TO SAID SECOND LIQUID FOR WITHDRAWING A QUANTITY OF ADDITIVE LIQUID FROM SAID SOURCE ON THE SUCTION STROKE AND FOR FORCING SAID ADDITIVE LIQUID INTO SAID SECOND LIQUID ON THE PUMPING STROKE AND A VALVE BETWEEN SAID PUMP AND SAID SOURCE OF ADDITIVE LIQUID ADAPTED TO BE IN CLOSED POSITION DURING THE PUMPING STROKE AND IN OPEN POSITION ON THE SUCTION STROKE, AND A VARIABLE PRESSURE MECHANISM ADAPTED TO BE CONNECTED TO A CONDUIT FOR LIQUID UNDER
Claim 2
Dependent Claim
106 words
A LIQUID FEED APPARATUS FOR FEEDING AN ADDITIVE LIQUID TO A SECOND LIQUID WHICH COMPRISES A PUMP ADAPTED TO BE CONNECTED TO A SOURCE FOR SAID ADDITIVE LIQUID AND TO SAID SECOND LIQUID FOR WITHDRAWING A QUANTITY OF ADDITIVE LIQUID FROM SAID SOURCE ON THE SUCTION STROKE AND FOR FORCING SAID ADDITIVE LIQUID INTO SAID SECOND LIQUID ON THE PUMPING STROKE AND A VALVE BETWEEN SAID PUMP AND SAID SOURCE OF ADDITIVE LIQUID ADAPTED TO BE IN CLOSED POSITION DURING THE PUMPING STROKE AND IN OPEN POSITION ON THE SUCTION STROKE, AND A VARIABLE PRESSURE MECHANISM ADAPTED TO BE CONNECTED TO A CONDUIT FOR LIQUID UNDER
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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 |