Patent US3527990A successfully refreshed from Google Patents.
US3527990A
Expired / Lapsed
US
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Motor speed control system with incremental speed variation
Assignee: Borg Warner Corp
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Filing: 1967-12-22
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Granted: 1970-09-08
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Expires: 1987-12-22
Abstract
No abstract record available.
Inventors
- 👤 Kurt Gasser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:04
CPC Classifications
H; H02; H02P; H02P27/00; H02P27/04; H02P27/06; H02P2201/00; H02P2201/03; H02P27/047
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) | 1973-09-07 | 1974-03-09 | 1974-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-07 | 1978-03-09 | 1978-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-07 | 1982-03-09 | 1982-09-08 | $7700.00 | Window Closed / Lapsed |