US2786351A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flowmeter
Assignee: Phillips Petroleum Co
•
Filing: 1954-08-09
•
Granted: 1957-03-26
•
Expires: 1974-08-09
Abstract
No abstract record available.
Inventors
- 👤 Bruce F Wiley
- 👤 Ralph A Doubt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:35
CPC Classifications
E; E21; E21B; E21B47/00; E21B47/10; G; G01; G01F; G01F1/00; G01F1/05; G01F1/10; G01F1/115
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US817887A
Cited
FR586697A
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US1652472A
Cited
US2127847A
Cited
US2270141A
Cited
US2487783A
Cited
GB606278A
Cited
US2649712A
Cited
US2654433A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-03-25 | 1960-09-24 | 1961-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-03-25 | 1964-09-24 | 1965-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-03-25 | 1968-09-24 | 1969-03-26 | $7700.00 | Window Closed / Lapsed |