US2674192A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Well pumping system with gas separator
Assignee: DRESSER EQUIPMENT Co
•
Filing: 1949-11-25
•
Granted: 1954-04-06
•
Expires: 1969-11-25
Abstract
No abstract record available.
Inventors
- 👤 Clarence J Coberly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:36
CPC Classifications
F; F04; F04B; F04B47/00; Y; Y10; Y10T; Y10T137/00; Y10T137/7287; Y10T137/7339
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US495074A
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US497295A
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US2179481A
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US2338903A
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US2446680A
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US2489665A
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US2597198A
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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) | 1957-04-05 | 1957-10-05 | 1958-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-05 | 1961-10-05 | 1962-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-05 | 1965-10-05 | 1966-04-06 | $7700.00 | Window Closed / Lapsed |