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US2650496A
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US
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Fluid flowmeter with heated resistance bridge circuit
Assignee: Phillips Petroleum Co
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Filing: 1948-05-17
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Granted: 1953-09-01
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Expires: 1968-05-17
Abstract
No abstract record available.
Inventors
- 👤 Walter G Middleton
- 👤 Kenneth R More
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:26
CPC Classifications
G; G01; G01F; G01F1/00; G01F1/68; G01F1/696
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1156030A
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US1291489A
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US1691600A
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US1406682A
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US2143962A
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US2366351A
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US2437449A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-31 | 1957-03-02 | 1957-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-31 | 1961-03-02 | 1961-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-31 | 1965-03-02 | 1965-09-01 | $7700.00 | Window Closed / Lapsed |