US2664532A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control circuits for induction motors
Assignee: Individual
•
Filing: 1952-01-15
•
Granted: 1953-12-29
•
Expires: 1972-01-15
Abstract
No abstract record available.
Inventors
- 👤 Alexander J Lewus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:15
CPC Classifications
H; H02; H02P; H02P25/00; H02P25/02; H02P25/06; H02P25/062; H02P1/00; H02P1/16; H02P1/42; H02P1/44; H02P1/445; H02P25/04; H02P6/00; H02P6/24
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2380270A
Cited
US2473244A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-12-28 | 1957-06-29 | 1957-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-28 | 1961-06-29 | 1961-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-28 | 1965-06-29 | 1965-12-29 | $7700.00 | Window Closed / Lapsed |