US2698133A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mechanical simulator for downhole pumping systems
Assignee: Phillips Petroleum Co
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Filing: 1951-01-08
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Granted: 1954-12-28
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Expires: 1971-01-08
Abstract
No abstract record available.
Inventors
- 👤 Frank W Bubb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:15
CPC Classifications
F; F04; F04B; F04B47/00; F04B47/02; E; E21; E21B; E21B43/00; E21B43/12; E21B43/121; E21B43/126; E21B43/127
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) | 1957-12-27 | 1958-06-28 | 1958-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-12-27 | 1962-06-28 | 1962-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-12-27 | 1966-06-28 | 1966-12-28 | $7700.00 | Window Closed / Lapsed |