Patent US3775842A successfully refreshed from Google Patents.
Patent US3274691A successfully refreshed from Google Patents.
US3274691A
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Fluid level indicators
Assignee: Motors Liquidation Co
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Filing: 1964-07-06
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Granted: 1966-09-27
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Expires: 1984-07-06
Abstract
No abstract record available.
Inventors
- 👤 Charles P Bolles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:57
CPC Classifications
G; G01; G01F; G01F23/00; G01F23/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
A FLUID OF LEVEL INDICATOR COMPRISING, IN COMBINATION, AN ELONGATED ELEMENT ADAPTED TO BE INSERTED INTO A CONTAINER OF A FLUID WHOSE LEVEL IS TO BE INDICATED, TEMPERATURE RESPONSIVE MEANS SO POSITIONED ON THE ELEMENT AS TO BE SENSITIVE TO THE TEMPERATURE OF THE FLUILD, AND A FLUID LEVEL INDICATING SCALE POSITIONED ON THE ELEMENT SO AS TO BE IMMERSIBLE IN THE FLUID AND ADAPTED TO BE MANEUVERED ON THE ELEMENT BY THE TEMPERATURE RESPONSIVE MEANS DISTANCES REFLECTING THE INFLUENCE OF THE FLUID TEMPERATURE ON THE FLUID LEVEL INDICATED BY THE SCALE.
Claim 2
Dependent Claim
92 words
A FLUID OF LEVEL INDICATOR COMPRISING, IN COMBINATION, AN ELONGATED ELEMENT ADAPTED TO BE INSERTED INTO A CONTAINER OF A FLUID WHOSE LEVEL IS TO BE INDICATED, TEMPERATURE RESPONSIVE MEANS SO POSITIONED ON THE ELEMENT AS TO BE SENSITIVE TO THE TEMPERATURE OF THE FLUILD, AND A FLUID LEVEL INDICATING SCALE POSITIONED ON THE ELEMENT SO AS TO BE IMMERSIBLE IN THE FLUID AND ADAPTED TO BE MANEUVERED ON THE ELEMENT BY THE TEMPERATURE RESPONSIVE MEANS DISTANCES REFLECTING THE INFLUENCE OF THE FLUID TEMPERATURE ON THE FLUID LEVEL INDICATED BY THE SCALE.
References Cited (Backward Citations)
US1582313A
Cited
US1736797A
Cited
US1771646A
Cited
US1881150A
Cited
US1898848A
Cited
US1948310A
Cited
US1991495A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-26 | 1970-03-28 | 1970-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-26 | 1974-03-28 | 1974-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-26 | 1978-03-28 | 1978-09-27 | $7700.00 | Window Closed / Lapsed |