Patent US2793306A successfully refreshed from Google Patents.
US2793306A
Expired / Lapsed
US
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Electric motor having its rotor braked when arrested
Assignee: Individual
•
Filing: 1953-03-04
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Granted: 1957-05-21
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Expires: 1973-03-04
Abstract
No abstract record available.
Inventors
- 👤 Bolech Enrico
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:36
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)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-05-20 | 1960-11-19 | 1961-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-05-20 | 1964-11-19 | 1965-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-05-20 | 1968-11-19 | 1969-05-21 | $7700.00 | Window Closed / Lapsed |