Patent US2519219A successfully refreshed from Google Patents.
US2519219A
Expired / Lapsed
US
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Rotor construction for induction motors
Assignee: Westinghouse Electric Corp
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Filing: 1947-08-21
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Granted: 1950-08-15
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Expires: 1967-08-21
Abstract
No abstract record available.
Inventors
- 👤 Rene A Baudry
- 👤 William C Brenner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:48
CPC Classifications
H; H02; H02K; H02K3/00; H02K3/46; H02K3/50; H02K3/51
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) | 1953-08-14 | 1954-02-13 | 1954-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-14 | 1958-02-13 | 1958-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-14 | 1962-02-13 | 1962-08-15 | $7700.00 | Window Closed / Lapsed |