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US1823979A
Expired / Lapsed
US
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Lamination for dynamo-electric machines
Assignee: Westinghouse Electric Corp
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Filing: 1929-05-03
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Granted: 1931-09-22
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Expires: 1949-05-03
Abstract
No abstract record available.
Inventors
- 👤 Richard H Jordan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:51
CPC Classifications
H; H02; H02K; H02K1/00; H02K1/06; H02K1/12; H02K1/14; H02K1/146
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) | 1934-09-21 | 1935-03-23 | 1935-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-09-21 | 1939-03-23 | 1939-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-09-21 | 1943-03-23 | 1943-09-22 | $7700.00 | Window Closed / Lapsed |