Patent US3226619A successfully refreshed from Google Patents.
US3226619A
Expired / Lapsed
US
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Generator-fed a.c. motor control with convertible-pole motor and standby source
Assignee: TRANSICOLD CORP
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Filing: 1964-01-06
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Granted: 1965-12-28
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Expires: 1984-01-06
Abstract
No abstract record available.
Inventors
- 👤 Block Leo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:27
CPC Classifications
H; H02; H02P; H02P9/00; B; B60; B60H; B60H1/00; B60H1/32; B60H1/3204; B60H1/3226; B60H1/3232; B60H2001/3269; B60H2001/327; B60H2001/3273
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US971056A
Cited
US1985639A
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US2067837A
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US2089512A
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US2104383A
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US2157926A
Cited
US2157840A
Cited
US2641736A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-27 | 1969-06-28 | 1969-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-27 | 1973-06-28 | 1973-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-27 | 1977-06-28 | 1977-12-28 | $7700.00 | Window Closed / Lapsed |