Patent US2541267A successfully refreshed from Google Patents.
Patent US2732709A successfully refreshed from Google Patents.
US2732709A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bench type freezemeter
Assignee: —
•
Filing: —
•
Granted: 1956-01-31
•
Expires: 1973-01-31
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:46
CPC Classifications
G; G01; G01N; G01N25/00; G01N25/02; G01N25/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
IN A FREEZING POINT TESTER FOR LIQUIDS, A CASING, A CYLINDRICAL SAMPLE-HOLDING TUBE PROJECTING THEREFROM HAVING AN INLET AT ITS FREE END AND A LATERAL OUTLET OPENING SPACED THEREFROM, AN INWARDLY OPENING CHECK VALVE IN SAID INLET, A THERMOMETER COMPRISING A CYLINDRICAL STEM HAVING A LOOSE SLIDING FIT IN TUBE WITH ITS TEMPERATURE-SENSISAID LATERAL OPENING, MANUALLY OPERABLE MEANS FOR CAUSING RELATIVE LONGITUDINAL MOVEMNET BETWEEN THE THERMOMETER STEM AND THE TUBE, SPRING ACTUATED MEANS IN THE CASING OPPOSING SAID MANUALLY OPERABLE MEANS, RELEASABLE MEANS FOR LATCHING THE TUBE AND THERMOMETER STEM AGAINST THE ACTION OF THE SPRING, WHILE PERMITTING A LIMITED RELATIVE RECIPROCATORY MOVEMENT OF SAID PARTS, AND A FREEZING CHAMBER ADAPTED TO RECEIVE THE STEM AND TUBE.
Claim 2
Dependent Claim
117 words
IN A FREEZING POINT TESTER FOR LIQUIDS, A CASING, A CYLINDRICAL SAMPLE-HOLDING TUBE PROJECTING THEREFROM HAVING AN INLET AT ITS FREE END AND A LATERAL OUTLET OPENING SPACED THEREFROM, AN INWARDLY OPENING CHECK VALVE IN SAID INLET, A THERMOMETER COMPRISING A CYLINDRICAL STEM HAVING A LOOSE SLIDING FIT IN TUBE WITH ITS TEMPERATURE-SENSISAID LATERAL OPENING, MANUALLY OPERABLE MEANS FOR CAUSING RELATIVE LONGITUDINAL MOVEMNET BETWEEN THE THERMOMETER STEM AND THE TUBE, SPRING ACTUATED MEANS IN THE CASING OPPOSING SAID MANUALLY OPERABLE MEANS, RELEASABLE MEANS FOR LATCHING THE TUBE AND THERMOMETER STEM AGAINST THE ACTION OF THE SPRING, WHILE PERMITTING A LIMITED RELATIVE RECIPROCATORY MOVEMENT OF SAID PARTS, AND A FREEZING CHAMBER ADAPTED TO RECEIVE THE STEM AND TUBE.
References Cited (Backward Citations)
US2297641A
Cited
US2651194A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-30 | 1959-08-01 | 1960-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-30 | 1963-08-01 | 1964-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-30 | 1967-08-01 | 1968-01-31 | $7700.00 | Window Closed / Lapsed |