US2867763A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for controlling or regulating an electric motor by pulses of variable pulsing ratio
Assignee: Siemens Schuckertwerke AG
•
Filing: 1955-08-02
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Granted: 1959-01-06
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Expires: 1975-08-02
Abstract
No abstract record available.
Inventors
- 👤 Sichling Georg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:17
CPC Classifications
H; H02; H02P; H02P7/00; H02P7/06; H02P7/18; H02P7/30; H02P7/305; Y; Y10; Y10S; Y10S388/00; Y10S388/907; Y10S388/915
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2086918A
Cited
GB580738A
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US2445568A
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US2498678A
Cited
US2683809A
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US2680160A
Cited
US2695930A
Cited
US2731567A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-05 | 1962-07-07 | 1963-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-05 | 1966-07-07 | 1967-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-05 | 1970-07-07 | 1971-01-06 | $7700.00 | Window Closed / Lapsed |