Patent US3398690A successfully refreshed from Google Patents.
US3398690A
Expired / Lapsed
US
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Well pumping system and related control
Assignee: CLAIR N DEATON
•
Filing: 1966-08-30
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Granted: 1968-08-27
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Expires: 1986-08-30
Abstract
No abstract record available.
Inventors
- 👤 Clair N Deaton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:00
CPC Classifications
F; F04; F04B; F04B47/00; F04B47/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1018253A
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US2403688A
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US2518597A
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US2707440A
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US2910007A
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US2947931A
Cited
US3010401A
Cited
US3284669A
Cited
US3290576A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-08-27 | 1972-02-26 | 1972-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-27 | 1976-02-26 | 1976-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-27 | 1980-02-26 | 1980-08-27 | $7700.00 | Window Closed / Lapsed |