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Patent US2452958A successfully refreshed from Google Patents.
US2452958A
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Synchronous electric motor with automatic starter
Assignee: Individual
•
Filing: 1946-12-17
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Granted: 1948-11-02
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Expires: 1966-12-17
Abstract
No abstract record available.
Inventors
- 👤 Schild Otto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:58
CPC Classifications
H; H02; H02K; H02K7/00; H02K7/10; H02K7/118
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2027944A
Cited
US1895637A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-11-02 | 1952-05-03 | 1952-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-11-02 | 1956-05-03 | 1956-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-11-02 | 1960-05-03 | 1960-11-02 | $7700.00 | Window Closed / Lapsed |