Patent US3169526A successfully refreshed from Google Patents.
US3541418A
Expired / Lapsed
US
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Proportional damping for motor drive
Assignee: International Business Machines Corp
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Filing: 1967-09-05
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Granted: 1970-11-17
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Expires: 1987-09-05
Abstract
No abstract record available.
Inventors
- 👤 Gerald J Agin
- 👤 George Melnyk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:48
CPC Classifications
G; G05; G05B; G05B19/00; G05B19/02; G05B19/18; G05B19/19; G05B19/21
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2674707A
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US2780760A
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US3363158A
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US3306416A
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US3378741A
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US3345547A
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US3370289A
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US3423658A
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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) | 1973-11-16 | 1974-05-18 | 1974-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-16 | 1978-05-18 | 1978-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-16 | 1982-05-18 | 1982-11-17 | $7700.00 | Window Closed / Lapsed |