Patent US2992560A successfully refreshed from Google Patents.
US2992560A
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US
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Liquid level gauge
Assignee: American Radiator and Standard Sanitary Corp
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Filing: 1956-11-14
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Granted: 1961-07-18
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Expires: 1976-11-14
Abstract
No abstract record available.
Inventors
- 👤 Robert W Morgan
- 👤 Warren W Hastings
- 👤 Clarence A Mass
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:18
CPC Classifications
G; G01; G01F; G01F23/00; G01F23/30; G01F23/32; G01F23/34; F; F17; F17C; F17C2250/00; F17C2250/04; F17C2250/0404; F17C2250/0408; F17C2250/0413
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1141499A
Cited
US1170910A
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US2091952A
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US2311387A
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US2584446A
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US2718869A
Cited
US2773388A
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US2795955A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-17 | 1965-01-16 | 1965-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-17 | 1969-01-16 | 1969-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-17 | 1973-01-16 | 1973-07-18 | $7700.00 | Window Closed / Lapsed |