Patent US3452208A successfully refreshed from Google Patents.
US3452208A
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US
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Automatic liquid level detector,using reflection from the meniscus
Assignee: LNP Corp A CORP OF
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Filing: 1966-03-29
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Granted: 1969-06-24
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Expires: 1986-03-29
Abstract
No abstract record available.
Inventors
- 👤 Thomas L Giltinan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:02
CPC Classifications
G; G01; G01L; G01L9/00; G01L9/0091; G01L9/0097; G01F; G01F23/00; G01F23/22; G01F23/28; G01F23/284; G01F23/292
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1955315A
Cited
US1737126A
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US2376459A
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US2817237A
Cited
US2980802A
Cited
US3233781A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-23 | 1972-12-23 | 1973-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-23 | 1976-12-23 | 1977-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-23 | 1980-12-23 | 1981-06-24 | $7700.00 | Window Closed / Lapsed |