US2948271A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic motor speed control apparatus
Assignee: Individual
•
Filing: 1957-11-08
•
Granted: 1960-08-09
•
Expires: 1977-11-08
Abstract
No abstract record available.
Inventors
- 👤 Ignatjev Vladimir
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:51
CPC Classifications
F; F02; F02D; F02D9/00; F02D2700/00; F02D2700/02; F02D2700/0217; F02D2700/0225; F02D2700/0228; F02D2700/023; F02D2700/0233
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2021832A
Cited
US2111284A
Cited
US2556485A
Cited
US2671542A
Cited
US2695629A
Cited
US2755877A
Cited
US2809708A
Cited
US2776722A
Cited
US2867196A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-09 | 1964-02-08 | 1964-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-09 | 1968-02-08 | 1968-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-09 | 1972-02-08 | 1972-08-09 | $7700.00 | Window Closed / Lapsed |