US2954471A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flow measuring apparatus
Assignee: Phillips Petroleum Co
•
Filing: 1956-05-09
•
Granted: 1960-09-27
•
Expires: 1976-05-09
Abstract
No abstract record available.
Inventors
- 👤 Raymond G Piety
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:44
CPC Classifications
G; G01; G01F; G01F1/00; G01F1/56; G01F1/64; E; E21; E21B; E21B47/00; E21B47/10; E21B47/11; E21B47/111; G01F1/05; G01F1/10; G01F1/106
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2659046A
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US2599975A
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US2654433A
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US2688872A
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US2729101A
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US2714168A
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US2700734A
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US2842961A
Cited
US2822688A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-09-27 | 1964-03-28 | 1964-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-27 | 1968-03-28 | 1968-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-27 | 1972-03-28 | 1972-09-27 | $7700.00 | Window Closed / Lapsed |