US2568701A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motor speed control
Assignee: Unisys Corp
•
Filing: 1946-10-11
•
Granted: 1951-09-25
•
Expires: 1966-10-11
Abstract
No abstract record available.
Inventors
- 👤 Paul F Arnold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:37
CPC Classifications
H; H02; H02P; H02P25/00; H02P25/16; H02P25/32; H02P25/325
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1376453A
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US1963246A
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FR747996A
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US2032176A
Cited
US2202172A
Cited
US2287459A
Cited
US2421632A
Cited
US2462751A
Cited
US2463463A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-09-24 | 1955-03-26 | 1955-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-09-24 | 1959-03-26 | 1959-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-09-24 | 1963-03-26 | 1963-09-25 | $7700.00 | Window Closed / Lapsed |