Patent US2954740A successfully refreshed from Google Patents.
US2954740A
Expired / Lapsed
US
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Pump means for hydraulic jacks
Assignee: Rheinstahl Wanheim GmbH
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Filing: 1955-01-17
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Granted: 1960-10-04
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Expires: 1975-01-17
Abstract
No abstract record available.
Inventors
- 👤 Wilkenloh Wilhelm
- 👤 Jager Erich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:45
CPC Classifications
E; E21; E21D; E21D15/00; E21D15/14; E21D15/44; E21D15/45
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US430251A
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US947613A
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US945648A
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US1170139A
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US1579913A
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US1829451A
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US2048098A
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US2440060A
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US2435326A
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US2550163A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-10-04 | 1964-04-04 | 1964-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-04 | 1968-04-04 | 1968-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-04 | 1972-04-04 | 1972-10-04 | $7700.00 | Window Closed / Lapsed |