Patent US2772393A successfully refreshed from Google Patents.
US2772393A
Expired / Lapsed
US
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Water-in-oil detector
Assignee: California Research LLC
•
Filing: 1952-12-23
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Granted: 1956-11-27
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Expires: 1972-12-23
Abstract
No abstract record available.
Inventors
- 👤 Vincent C Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:46
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/02; G01N27/023; G01N27/22; G01N27/223
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1815717A
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US2071607A
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US2272851A
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US2352011A
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US2298629A
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US2447375A
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US2599583A
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US2617299A
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US2573172A
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US2576173A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-11-27 | 1960-05-28 | 1960-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-27 | 1964-05-28 | 1964-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-27 | 1968-05-28 | 1968-11-27 | $7700.00 | Window Closed / Lapsed |