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Patent US2783646A successfully refreshed from Google Patents.
US2783646A
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Flowmeter for wells
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1954-12-09
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Granted: 1957-03-05
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Expires: 1974-12-09
Abstract
No abstract record available.
Inventors
- 👤 Robert C Rumble
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:49
CPC Classifications
E; E21; E21B; E21B47/00; E21B47/10; G; G01; G01F; G01F1/00; G01F1/05; G01F1/20; G01F1/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US784948A
Cited
US2380399A
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US2475630A
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US2552552A
Cited
US2649711A
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US2629446A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-03-04 | 1960-09-03 | 1961-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-03-04 | 1964-09-03 | 1965-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-03-04 | 1968-09-03 | 1969-03-05 | $7700.00 | Window Closed / Lapsed |