Patent US2699154A successfully refreshed from Google Patents.
US2699154A
Expired / Lapsed
US
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Oil well pumping apparatus
Assignee: Individual
•
Filing: 1952-07-12
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Granted: 1955-01-11
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Expires: 1972-07-12
Abstract
No abstract record available.
Inventors
- 👤 Samuel V Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:10
CPC Classifications
F; F04; F04B; F04B47/00; F04B47/02; F04B47/04; Y; Y10; Y10S; Y10S417/00; Y10S417/904
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2313404A
Cited
US2347301A
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US2347302A
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US2366777A
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US2363142A
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US2504218A
Cited
US2612142A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-01-10 | 1958-07-12 | 1959-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-01-10 | 1962-07-12 | 1963-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-01-10 | 1966-07-12 | 1967-01-11 | $7700.00 | Window Closed / Lapsed |