Patent US2946291A successfully refreshed from Google Patents.
US2946291A
Expired / Lapsed
US
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Suction and pressure pump
Assignee: Roebig Christ & Co Inc
•
Filing: 1957-01-14
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Granted: 1960-07-26
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Expires: 1977-01-14
Abstract
No abstract record available.
Inventors
- 👤 Roebig Adolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:48
CPC Classifications
F; F04; F04C; F04C2/00; F04C2/02; F04C2/04; F04C5/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE662980C
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US2246487A
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US2428619A
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US2519642A
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US2583572A
Cited
US2617362A
Cited
US2585949A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-07-26 | 1964-01-25 | 1964-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-26 | 1968-01-25 | 1968-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-26 | 1972-01-25 | 1972-07-26 | $7700.00 | Window Closed / Lapsed |