Patent US3020758A successfully refreshed from Google Patents.
US3020758A
Expired / Lapsed
US
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Specific gravity responsive liquid meter
Assignee: GRANBERG Corp
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Filing: 1958-04-25
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Granted: 1962-02-13
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Expires: 1978-04-25
Abstract
No abstract record available.
Inventors
- 👤 Albert J Granberg
- 👤 Thuse Erik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:34
CPC Classifications
G; G01; G01F; G01F15/00; G01F15/02; G01F1/00; G01F1/76; G01F1/78; G01F1/80
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2312105A
Cited
US2438934A
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US2312944A
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US2348593A
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US2886969A
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US2791118A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-12 | 1965-08-14 | 1966-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-12 | 1969-08-14 | 1970-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-12 | 1973-08-14 | 1974-02-13 | $7700.00 | Window Closed / Lapsed |