Patent US2922399A successfully refreshed from Google Patents.
US2922399A
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Hydraulic drive and control therefor
Assignee: International Business Machines Corp
•
Filing: 1957-01-24
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Granted: 1960-01-26
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Expires: 1977-01-24
Abstract
No abstract record available.
Inventors
- 👤 Hugo A Panissidi
- 👤 Daniel P Darwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:16
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/48; G11B5/54; G11B5/55; G11B5/5521; G11B5/5526; F; F15; F15B; F15B15/00; F15B15/20; F15B15/28; F15B15/2815; F15B15/2861; G05; G05B; G05B2219/00; G05B2219/30; G05B2219/37; G05B2219/37103; G05B2219/41; G05B2219/41309; G05B2219/43; G05B2219/43194
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1683175A
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US1766510A
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US2118021A
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US1943061A
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US2157707A
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US2251961A
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US2435026A
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US2765808A
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US2855752A
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US2821172A
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US2860751A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-01-25 | 1963-07-27 | 1964-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-25 | 1967-07-27 | 1968-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-25 | 1971-07-27 | 1972-01-26 | $7700.00 | Window Closed / Lapsed |