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US3394589A
Expired / Lapsed
US
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Apparatus for measuring liquid level
Assignee: Japan Radio Co Ltd
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Filing: 1966-03-04
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Granted: 1968-07-30
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Expires: 1986-03-04
Abstract
No abstract record available.
Inventors
- 👤 Tomioka Genichiro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:27
CPC Classifications
G; G01; G01F; G01F23/00; G01F23/22; G01F23/28; G01F23/296; G01F23/2962; G01N; G01N2291/00; G01N2291/02; G01N2291/028; G01N2291/02836; Y; Y10; Y10S; Y10S367/00; Y10S367/902; Y10S367/908
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-30 | 1972-01-29 | 1972-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-30 | 1976-01-29 | 1976-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-30 | 1980-01-29 | 1980-07-30 | $7700.00 | Window Closed / Lapsed |