US3546550A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control circuit for braking speed control of induction motor
Assignee: CKD Praha DIZ AS
•
Filing: 1969-03-24
•
Granted: 1970-12-08
•
Expires: 1989-03-24
Abstract
No abstract record available.
Inventors
- 👤 Jiri Badal
- 👤 Jan Holy
- 👤 Josef Parlesak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:54
CPC Classifications
H; H02; H02P; H02P3/00; H02P3/06; H02P3/18; H02P3/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2637007A
Cited
US2996648A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-07 | 1974-06-08 | 1974-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-07 | 1978-06-08 | 1978-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-07 | 1982-06-08 | 1982-12-08 | $7700.00 | Window Closed / Lapsed |