Patent US2176871A successfully refreshed from Google Patents.
US2176871A
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US
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Ventilated cast rotor
Assignee: Reliance Electric and Engineering Co
•
Filing: 1937-01-02
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Granted: 1939-10-24
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Expires: 1957-01-02
Abstract
No abstract record available.
Inventors
- 👤 Fred E Harrell
- 👤 Frank S Dobric
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:35
CPC Classifications
H; H02; H02K; H02K15/00; H02K15/02; H02K15/021; H02K15/023; H02K17/00; H02K17/02; H02K17/16; H02K17/20; Y; Y10; Y10S; Y10S164/00; Y10S164/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1942-10-23 | 1943-04-24 | 1943-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-10-23 | 1947-04-24 | 1947-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-10-23 | 1951-04-24 | 1951-10-24 | $7700.00 | Window Closed / Lapsed |