Patent US2928351A successfully refreshed from Google Patents.
US2928351A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metering pump
Assignee: Individual
•
Filing: 1956-11-13
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Granted: 1960-03-15
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Expires: 1976-11-13
Abstract
No abstract record available.
Inventors
- 👤 Karl A Klingler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:59
CPC Classifications
F; F04; F04B; F04B53/00; F04B53/16; F04B53/162; F04B53/164; F04B39/00; F04B39/04; F04B39/041; F04B39/044; F04B5/00; F04B9/00; F04B9/02; F04B9/04; F04B9/042; F16; F16J; F16J3/00; F16J3/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB189608851A
Cited
US673602A
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US1571845A
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DE508552C
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US2291889A
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US2431070A
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US2578265A
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US2613610A
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US2808003A
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US2757542A
Cited
US2820415A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-15 | 1963-09-14 | 1964-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-15 | 1967-09-14 | 1968-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-15 | 1971-09-14 | 1972-03-15 | $7700.00 | Window Closed / Lapsed |