Patent EP0465058A2 successfully refreshed from Google Patents.
US2779291A
Expired / Lapsed
US
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Pump control
Assignee: Geo D Roper Corp
•
Filing: 1953-03-23
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Granted: 1957-01-29
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Expires: 1973-03-23
Abstract
No abstract record available.
Inventors
- 👤 John R Albright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:49
CPC Classifications
F; F04; F04C; F04C14/00; F04C14/02; F04C15/00; F04C15/0057; F04C15/008
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1044444A
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US1141015A
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US1285819A
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US1976040A
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US2149600A
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US2280392A
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US2411602A
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US2621608A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-01-29 | 1960-07-30 | 1961-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-29 | 1964-07-30 | 1965-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-29 | 1968-07-30 | 1969-01-29 | $7700.00 | Window Closed / Lapsed |