Patent US3006221A successfully refreshed from Google Patents.
US3006221A
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US
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Dynamoelectric unit drive
Assignee: Motors Liquidation Co
•
Filing: 1957-09-16
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Granted: 1961-10-31
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Expires: 1977-09-16
Abstract
No abstract record available.
Inventors
- 👤 Harold J Cromwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:52
CPC Classifications
F; F16; F16H; F16H61/00; F16H61/66; F16H61/662; F16H61/6625; F02; F02B; F02B63/00; F02B63/04; F02B63/044; F02B2063/045; F02B63/042; F02B67/00; F02B67/04; F02B67/06; Y; Y10; Y10T; Y10T74/00; Y10T74/13; Y10T74/138
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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Cited
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Cited
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Cited
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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) | 1964-10-30 | 1965-05-01 | 1965-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-30 | 1969-05-01 | 1969-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-30 | 1973-05-01 | 1973-10-31 | $7700.00 | Window Closed / Lapsed |