Patent US2921470A successfully refreshed from Google Patents.
US2921470A
Expired / Lapsed
US
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High and low liquid level gauge
Assignee: Individual
•
Filing: 1956-03-01
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Granted: 1960-01-19
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Expires: 1976-03-01
Abstract
No abstract record available.
Inventors
- 👤 Joseph H Molat
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:05
CPC Classifications
G; G01; G01F; G01F23/00; G01F23/30; G01F23/56; G01F23/58
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE115472C
Cited
US1647806A
Cited
US1407388A
Cited
US1581440A
Cited
US1546409A
Cited
US1734430A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-01-18 | 1963-07-20 | 1964-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-18 | 1967-07-20 | 1968-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-18 | 1971-07-20 | 1972-01-19 | $7700.00 | Window Closed / Lapsed |