Patent US2461759A successfully refreshed from Google Patents.
US2461759A
Expired / Lapsed
US
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Alternating current brake motor
Assignee: DUMORE CO
•
Filing: 1945-02-26
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Granted: 1949-02-15
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Expires: 1965-02-26
Abstract
No abstract record available.
Inventors
- 👤 Nelson James Holly
- 👤 Servis Hoyt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:55
CPC Classifications
H; H02; H02K; H02K7/00; H02K7/10; H02K7/102; H02K7/1021; H02K7/1023; H02K7/1025
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US825327A
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US1062017A
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US1837928A
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US2009121A
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US2077888A
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US2059028A
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US2219157A
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US2223021A
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US2395905A
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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) | 1952-02-15 | 1952-08-16 | 1953-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-02-15 | 1956-08-16 | 1957-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-02-15 | 1960-08-16 | 1961-02-15 | $7700.00 | Window Closed / Lapsed |