Patent US3437044A successfully refreshed from Google Patents.
US3437044A
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Fluid cooled,double solenoid pumping mechanism
Assignee: DAVID H SANDERS
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Filing: 1968-07-03
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Granted: 1969-04-08
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Expires: 1988-07-03
Abstract
No abstract record available.
Inventors
- 👤 David H Sanders
- 👤 James M Kennedy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:50
CPC Classifications
F; F04; F04B; F04B53/00; F04B53/10; F04B53/102; F04B53/1022; F04B53/1025; F04B17/00; F04B17/03; F04B17/04; F04B17/042; F04B17/046; F04B5/00; F04B5/02; F04B53/12; F04B53/125; F04B53/127; F04B53/129; F04B53/14; F04B53/144; F04B53/16; F04B53/162; F04B7/00; F04B7/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE719022C
Cited
US2443344A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-07 | 1972-10-07 | 1973-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-07 | 1976-10-07 | 1977-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-07 | 1980-10-07 | 1981-04-08 | $7700.00 | Window Closed / Lapsed |