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US3379059A
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Flow meter with gravity and liquid sensing switches
Assignee: Phillips Petroleum Co
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Filing: 1966-05-04
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Granted: 1968-04-23
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Expires: 1986-05-04
Abstract
No abstract record available.
Inventors
- 👤 Bruce F Wiley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 05:57
CPC Classifications
E; E21; E21B; E21B47/00; E21B47/10; E21B47/113; B; B60; B60Q; B60Q1/00; B60Q1/26; B60Q1/44; B60R; B60R21/00; B60R21/02; B60R21/06; B60R21/08; G; G01; G01F; G01F1/00; G01F1/68
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-23 | 1971-10-23 | 1972-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-23 | 1975-10-23 | 1976-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-23 | 1979-10-23 | 1980-04-23 | $7700.00 | Window Closed / Lapsed |