US2737810A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical resistance thermometer
Assignee: ConocoPhillips Co
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Filing: 1953-12-09
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Granted: 1956-03-13
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Expires: 1973-12-09
Abstract
No abstract record available.
Inventors
- 👤 Witte Leendert De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:56
CPC Classifications
G; G01; G01K; G01K11/00; G01K11/06; G01K7/00; G01K7/40; G05; G05D; G05D23/00; G05D23/19; G05D23/20; G05D23/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
AN ELECTRICAL RESISTANCE THERMOMETER COMPRISING AN ALTERNATING CURRENT SOURCE, A CURRENT RESPONSIVE INDICATING INSTRUMENT, AN ELECTRICALLY INSULATING HEAT CONDUCTIVE CONTAINER, THE ENDS OF SAID CONTAINER BEING PROVIDED WITH ELECTRICAL TERMINALS, AN ELECTRICALLY CONDUCTIVE LIQUID IN SAID CONTAINER ADAPTED TO VARY IN ELECTRICAL CONDUCTIVITY WITH VARIATIONS IN THE TEMPERATURE THEREOF, TWO ELECTRICALLY SEPARATED ELECTRODES HAVING PORTIONS THEREOF WITHIN SAID CONTAINER AND LOCATED BETWEEN SAID ELECTRICAL
Claim 2
Dependent Claim
64 words
AN ELECTRICAL RESISTANCE THERMOMETER COMPRISING AN ALTERNATING CURRENT SOURCE, A CURRENT RESPONSIVE INDICATING INSTRUMENT, AN ELECTRICALLY INSULATING HEAT CONDUCTIVE CONTAINER, THE ENDS OF SAID CONTAINER BEING PROVIDED WITH ELECTRICAL TERMINALS, AN ELECTRICALLY CONDUCTIVE LIQUID IN SAID CONTAINER ADAPTED TO VARY IN ELECTRICAL CONDUCTIVITY WITH VARIATIONS IN THE TEMPERATURE THEREOF, TWO ELECTRICALLY SEPARATED ELECTRODES HAVING PORTIONS THEREOF WITHIN SAID CONTAINER AND LOCATED BETWEEN SAID ELECTRICAL
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) | 1959-03-13 | 1959-09-12 | 1960-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-13 | 1963-09-12 | 1964-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-13 | 1967-09-12 | 1968-03-13 | $7700.00 | Window Closed / Lapsed |