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Patent US3474965A successfully refreshed from Google Patents.
US3474965A
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Liquid proportioning and metering pump system
Assignee: Individual
•
Filing: 1967-08-28
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Granted: 1969-10-28
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Expires: 1987-08-28
Abstract
No abstract record available.
Inventors
- 👤 Clarence B Coleman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:51
CPC Classifications
C; C23; C23G; C23G3/00; B; B01; B01F; B01F35/00; B01F35/80; B01F35/88; B01F35/882; B01F35/8821; B64; B64F; B64F5/00; B64F5/30; F; F04; F04B; F04B13/00; F04B13/02; Y; Y10; Y10T; Y10T137/00; Y10T137/0318; Y10T137/0324; Y10T137/0363
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3239100A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-27 | 1973-04-28 | 1973-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-27 | 1977-04-28 | 1977-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-27 | 1981-04-28 | 1981-10-28 | $7700.00 | Window Closed / Lapsed |