US3557565A
Expired / Lapsed
US
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Thermal device calibrating apparatus
Assignee: MILL AND MINE SERVICES Inc A CORP OF
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Filing: 1969-03-24
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Granted: 1971-01-26
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Expires: 1989-03-24
Abstract
Abstract AN ARRANGEMENT FOR CALIBRATING TEMPERATURE INDICATING DEVICES AT SELECTED TEMPERATURES WHICH INCLUDES A FLUID FLOW CIRCUIT ADAPTED TO RECEIVE A TEMPERATURE INDICATING DEVICE AND THE DEVICE IS IMMERSED IN A FLUID WHICH FLOWS THROUGH THE CIRCUIT. THE CIRCUIT INCLUDES HEAT EXCHANGE MEANS TO TEMPER THE FLUID TO A SELECTED TEMPERATURE WHERE THE HEAT IS SUPPLIED TO AND REMOVED FROM THE HEAT EX- CHANGER MEANS BY A REVERSIBLE ELECTRIC THERMAL EFFECT GENERATING DEVICE.
Inventors
- 👤 Walter J Kissel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:57
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/19; G05D23/1919; G01; G01K; G01K15/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |