US2811950A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power cylinders and pistons for hydraulic presses, jacks and the like
Assignee: Southwest Industrial Products Inc
•
Filing: 1953-11-06
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Granted: 1957-11-05
•
Expires: 1973-11-06
Abstract
No abstract record available.
Inventors
- 👤 Gerhard B Entz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:25
CPC Classifications
B; B66; B66F; B66F3/00; B66F3/24; B66F3/25; B66F3/26; F; F15; F15B; F15B15/00; F15B15/08; F15B15/14; F15B15/1423; F15B15/1447; F15B15/149; F16; F16J; F16J1/00; F16J1/09
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US458223A
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DE656338C
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FR414448A
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US1075468A
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US1890244A
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US1713907A
Cited
US2371553A
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US2379683A
Cited
US2455725A
Cited
US2452369A
Cited
US2596475A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-11-04 | 1961-05-06 | 1961-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-04 | 1965-05-06 | 1965-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-04 | 1969-05-06 | 1969-11-05 | $7700.00 | Window Closed / Lapsed |