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Patent US3401562A successfully refreshed from Google Patents.
US3401562A
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Material level indicator
Assignee: WARFORD A REANEY
•
Filing: 1966-07-20
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Granted: 1968-09-17
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Expires: 1986-07-20
Abstract
No abstract record available.
Inventors
- 👤 Warford A Reaney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:27
CPC Classifications
G; G01; G01F; G01F23/00; G01F23/14; G01F23/16; G01F23/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US411510A
Cited
US1449437A
Cited
US2382695A
Cited
US2541576A
Cited
US2702477A
Cited
US2713793A
Cited
US3290938A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-09-17 | 1972-03-18 | 1972-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-17 | 1976-03-18 | 1976-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-17 | 1980-03-18 | 1980-09-17 | $7700.00 | Window Closed / Lapsed |