US3279256A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermal measuring apparatus
Assignee: Rdf Corp
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Filing: 1963-12-27
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Granted: 1966-10-18
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Expires: 1983-12-27
Abstract
No abstract record available.
Inventors
- 👤 Hugh R Rainge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:52
CPC Classifications
G; G01; G01K; G01K1/00; G01K1/16; G01K1/18
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
76 words
THERMAL MEASURING APPARATUS COMPRSING: A PRIMARY TEMPERATURE SENSITIVE RESISTANCE MEANS AND A COMPOSITE SECONDARY TEMPERATURE SENSITIVE RESISTANCE MEANS HAVING RESPECTIVELY DIFFERENT ELECTRICAL RESPONSE SENSITIVITIES TO TEMPERATURE, AND HAVING TOTAL THERMAL TRANSFER COEFFICIENTS THE RATIO OF WHICH IS SUBSTANTIALLY THE INVERSE OF THE RATIO OF THEIR RESPECTIVE ELECTRICAL RESPONSE SENSITIVIES, SAID COMPOSITE SECONDARY RESISTANCE MEANS COMPRISING: A SECONDARY TEMPERATURE SENSITIVE RESISTANCE MEANS AND A COMPENSATING TEMPERATURE SENSITIVE RESISTANCE MEANS CONNECTED TO PARALLEL WITH SAID SECONDARY RESISTANCE MEANS;
References Cited (Backward Citations)
US2798377A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-17 | 1970-04-18 | 1970-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-17 | 1974-04-18 | 1974-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-17 | 1978-04-18 | 1978-10-18 | $7700.00 | Window Closed / Lapsed |