Patent US3021716A successfully refreshed from Google Patents.
US3021716A
Expired / Lapsed
US
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Proportioning pump
Assignee: Individual
•
Filing: 1958-09-25
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Granted: 1962-02-20
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Expires: 1978-09-25
Abstract
No abstract record available.
Inventors
- 👤 Goyette Francis Henry
- 👤 James B Gabler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:12
CPC Classifications
F; F04; F04B; F04B49/00; F04B49/12; F04B49/121; G; G01; G01F; G01F11/00; G01F11/02; G01F11/021; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18248; Y10T74/18256; Y10T74/18296
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US595717A
Cited
US838565A
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US1044379A
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US1336803A
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US1571845A
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US2619192A
Cited
US2592237A
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US2776573A
Cited
FR1107596A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-19 | 1965-08-21 | 1966-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-19 | 1969-08-21 | 1970-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-19 | 1973-08-21 | 1974-02-20 | $7700.00 | Window Closed / Lapsed |