Patent US2761391A successfully refreshed from Google Patents.
US2761391A
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Metering pump for pressurized normally-gaseous liquids
Assignee: John Blue Co Inc
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Filing: 1951-09-26
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Granted: 1956-09-04
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Expires: 1971-09-26
Abstract
No abstract record available.
Inventors
- 👤 Johnston Douglas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:53
CPC Classifications
F; F04; F04B; F04B53/00; F04B53/06; F04B15/00; F04B15/06; F04B49/00; F04B49/12; F04B53/10; F04B53/12; F04B53/125; F04B53/127; F04B9/00; F04B9/02; F04B9/04; F04B9/042
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1170756A
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US1486498A
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US1922721A
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US1923395A
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US2657640A
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US2430545A
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US2481183A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-09-04 | 1960-03-05 | 1960-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-04 | 1964-03-05 | 1964-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-04 | 1968-03-05 | 1968-09-04 | $7700.00 | Window Closed / Lapsed |