US2546271A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motor control system
Assignee: Unisys Corp
•
Filing: 1946-12-21
•
Granted: 1951-03-27
•
Expires: 1966-12-21
Abstract
No abstract record available.
Inventors
- 👤 Henry F Mckenney
- 👤 William H Newell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:01
CPC Classifications
G; G05; G05D; G05D3/00; G05D3/12; G05D3/14; G05D3/1418; H; H02; H02P; H02P25/00; H02P25/16; H02P25/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2414430A
Cited
US2235551A
Cited
US2216301A
Cited
US2288295A
Cited
US2346838A
Cited
US2435926A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-03-26 | 1954-09-25 | 1955-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-26 | 1958-09-25 | 1959-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-26 | 1962-09-25 | 1963-03-27 | $7700.00 | Window Closed / Lapsed |