Patent US3879339A successfully refreshed from Google Patents.
Patent US2845033A successfully refreshed from Google Patents.
US2845033A
Expired / Lapsed
US
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Diaphragm pump
Assignee: Tokheim Corp
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Filing: 1954-07-08
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Granted: 1958-07-29
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Expires: 1974-07-08
Abstract
No abstract record available.
Inventors
- 👤 George W Wright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:16
CPC Classifications
F; F04; F04B; F04B53/00; F04B53/10; F04B53/1037; F04B43/00; F04B43/0009; F04B43/0054; F04B43/02; F04B43/023
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US677474A
Cited
GB245342A
Cited
US2108079A
Cited
US2258009A
Cited
US2407792A
Cited
US2675758A
Cited
FR990316A
Cited
US2775435A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-28 | 1962-01-27 | 1962-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-28 | 1966-01-27 | 1966-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-28 | 1970-01-27 | 1970-07-29 | $7700.00 | Window Closed / Lapsed |