US3377535A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for controlling speed of a dc motor of brushless type
Assignee: Panasonic Holdings Corp
•
Filing: 1966-08-23
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Granted: 1968-04-09
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Expires: 1986-08-23
Abstract
No abstract record available.
Inventors
- 👤 Yasuoka Shine
- 👤 Tanaka Yutaka
- 👤 Nagasaki Sakon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:58
CPC Classifications
H; H02; 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) | 1971-04-09 | 1971-10-09 | 1972-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-09 | 1975-10-09 | 1976-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-09 | 1979-10-09 | 1980-04-09 | $7700.00 | Window Closed / Lapsed |