US2416059A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical apparatus for indicating liquid levels
Assignee: Evershed and Vignoles Ltd
•
Filing: 1943-09-27
•
Granted: 1947-02-18
•
Expires: 1963-09-27
Abstract
No abstract record available.
Inventors
- 👤 Marchment William Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:05
CPC Classifications
G; G01; G01F; G01F23/00; G01F23/30; G01F23/64; G01F23/68
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB173071A
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US1081843A
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US1231964A
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US1189869A
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FR600546A
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US1856364A
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FR681642A
Cited
GB435455A
Cited
GB474766A
Cited
US2289202A
Cited
US2298893A
Cited
US2333406A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-02-17 | 1950-08-19 | 1951-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-02-17 | 1954-08-19 | 1955-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-02-17 | 1958-08-19 | 1959-02-18 | $7700.00 | Window Closed / Lapsed |