US3443184A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuit arrangement for controlling the speed of a commutator or induction motor
Assignee: US Philips Corp
•
Filing: 1966-07-28
•
Granted: 1969-05-06
•
Expires: 1986-07-28
Abstract
No abstract record available.
Inventors
- 👤 Jurgen Lemmrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:34
CPC Classifications
H; H02; H02P; H02P25/00; H02P25/02; H02P25/10; H02P25/14; H02P27/00; H02P27/02; H02P27/026
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3320506A
Cited
US3348110A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-05-05 | 1972-11-04 | 1973-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-05 | 1976-11-04 | 1977-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-05 | 1980-11-04 | 1981-05-06 | $7700.00 | Window Closed / Lapsed |