US3531669A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dc motor with speed control arrangement
Assignee: Nihon Victor KK
•
Filing: 1968-09-06
•
Granted: 1970-09-29
•
Expires: 1988-09-06
Abstract
No abstract record available.
Inventors
- 👤 Osamu Samuta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:58
CPC Classifications
H; H02; H02K; H02K11/00; H02K11/20; H02K11/21; H02K11/23; Y; Y10; Y10S; Y10S388/00; Y10S388/923; Y10S388/924
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2478848A
Cited
US2761031A
Cited
US2738391A
Cited
US2833879A
Cited
US2814770A
Cited
US3062091A
Cited
US3121811A
Cited
US3020465A
Cited
US3058045A
Cited
US3206667A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-28 | 1974-03-30 | 1974-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-28 | 1978-03-30 | 1978-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-28 | 1982-03-30 | 1982-09-29 | $7700.00 | Window Closed / Lapsed |