US2803193A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Long stroke well pump reciprocator
Assignee: Individual
•
Filing: 1954-04-09
•
Granted: 1957-08-20
•
Expires: 1974-04-09
Abstract
No abstract record available.
Inventors
- 👤 Herbert M Salentine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:27
CPC Classifications
F; F04; F04B; F04B47/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US531792A
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US1746811A
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US1802790A
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US1933848A
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US1907951A
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US2073809A
Cited
US2161922A
Cited
US2261752A
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US2258493A
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US2589669A
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US2589671A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-08-19 | 1961-02-18 | 1961-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-19 | 1965-02-18 | 1965-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-19 | 1969-02-18 | 1969-08-20 | $7700.00 | Window Closed / Lapsed |