US2476657A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic motor control circuits
Assignee: Askania Regulator Co
•
Filing: 1943-05-31
•
Granted: 1949-07-19
•
Expires: 1963-05-31
Abstract
No abstract record available.
Inventors
- 👤 Glass Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:45
CPC Classifications
G; G05; G05D; G05D3/00; G05D3/12; G05D3/14; G05D3/18; H; H02; H02P; H02P7/00; H02P7/03
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1942587A
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US2001836A
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US2079497A
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US2164728A
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US2109776A
Cited
US2150265A
Cited
US2221517A
Cited
GB522130A
Cited
US2272714A
Cited
US2333393A
Cited
US2314937A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-07-18 | 1953-01-17 | 1953-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-07-18 | 1957-01-17 | 1957-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-07-18 | 1961-01-17 | 1961-07-19 | $7700.00 | Window Closed / Lapsed |