Patent US2811108A successfully refreshed from Google Patents.
US2811108A
Expired / Lapsed
US
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Variable-capacity metering pump
Assignee: John Blue Co Inc
•
Filing: 1956-02-20
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Granted: 1957-10-29
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Expires: 1976-02-20
Abstract
No abstract record available.
Inventors
- 👤 Donelson B Horton
- 👤 Johnston Douglas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:01
CPC Classifications
G; G01; G01F; G01F11/00; G01F11/02; G01F11/021
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US948227A
Cited
US1452968A
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US1611849A
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US1674015A
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US1913225A
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US2287627A
Cited
US2431070A
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US2458197A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-10-28 | 1961-04-29 | 1961-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-28 | 1965-04-29 | 1965-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-28 | 1969-04-29 | 1969-10-29 | $7700.00 | Window Closed / Lapsed |