US2586412A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control system for dynamoelectric machines
Assignee: Westinghouse Electric Corp
•
Filing: 1948-06-19
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Granted: 1952-02-19
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Expires: 1968-06-19
Abstract
No abstract record available.
Inventors
- 👤 Jr Amos J Winchester
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:27
CPC Classifications
B; B21; B21B; B21B37/00; B21B37/48; B21B37/52; B21B37/54
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2264277A
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US2339939A
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US2342790A
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US2385669A
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US2437973A
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US2447654A
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US2451901A
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US2444248A
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US2456950A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-02-18 | 1955-08-20 | 1956-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-18 | 1959-08-20 | 1960-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-18 | 1963-08-20 | 1964-02-19 | $7700.00 | Window Closed / Lapsed |