US3176207A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical motor drive system having position control
Assignee: Emerson Electric Co
•
Filing: 1961-06-19
•
Granted: 1965-03-30
•
Expires: 1981-06-19
Abstract
No abstract record available.
Inventors
- 👤 John H Wallace
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 02:46
CPC Classifications
H; H02; H02P; H02P5/00; H02P5/46
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US522820A
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US615673A
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US1075683A
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US1757734A
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US2041510A
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DE671336C
Cited
US2560485A
Cited
US2782349A
Cited
GB847941A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-29 | 1968-09-28 | 1969-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-29 | 1972-09-28 | 1973-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-29 | 1976-09-28 | 1977-03-30 | $7700.00 | Window Closed / Lapsed |