Patent US2679642A successfully refreshed from Google Patents.
US2679642A
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US
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Liquid level indicator
Assignee: Westinghouse Electric Corp
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Filing: 1951-06-23
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Granted: 1954-05-25
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Expires: 1971-06-23
Abstract
No abstract record available.
Inventors
- 👤 Wexler Aaron
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 12:45
CPC Classifications
G; G01; G01F; G01F23/00; G01F23/22; G01F23/24; G01F23/246
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR622247A
Cited
US2050128A
Cited
GB513427A
Cited
US2195019A
Cited
US2361872A
Cited
US2398375A
Cited
US2524933A
Cited
US2537246A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-24 | 1957-11-23 | 1958-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-24 | 1961-11-23 | 1962-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-24 | 1965-11-23 | 1966-05-25 | $7700.00 | Window Closed / Lapsed |