Patent US3153185A successfully refreshed from Google Patents.
US3153185A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric motor with transistor control
Assignee: Cabral Motors Inc
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Filing: 1961-01-06
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Granted: 1964-10-13
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Expires: 1981-01-06
Abstract
No abstract record available.
Inventors
- 👤 Jr Karl H Hummel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:24
CPC Classifications
H; H02; H02P; H02P6/00; H02P6/14; H02K; H02K29/00; H02K29/06; H02K29/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-10-13 | 1968-04-13 | 1968-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-10-13 | 1972-04-13 | 1972-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-10-13 | 1976-04-13 | 1976-10-13 | $7700.00 | Window Closed / Lapsed |