Patent US3504344A successfully refreshed from Google Patents.
US2685043A
Expired / Lapsed
US
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Brake for electric motors
Assignee: General Patent Corp
•
Filing: 1952-03-22
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Granted: 1954-07-27
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Expires: 1972-03-22
Abstract
No abstract record available.
Inventors
- 👤 Lyndon A Durant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:49
CPC Classifications
H; H02; H02K; H02K7/00; H02K7/10; H02K7/12; H02K7/125
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1501497A
Cited
US1771281A
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US1903230A
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US2052929A
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US2172440A
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US2445658A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-07-26 | 1958-01-25 | 1958-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-07-26 | 1962-01-25 | 1962-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-07-26 | 1966-01-25 | 1966-07-27 | $7700.00 | Window Closed / Lapsed |