Patent US1373002A successfully refreshed from Google Patents.
US1373002A
Expired / Lapsed
US
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Dynamo-electric machine
Assignee: Westinghouse Electric Corp
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Filing: 1916-05-16
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Granted: 1921-03-29
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Expires: 1936-05-16
Abstract
No abstract record available.
Inventors
- 👤 Rudolf E Hellmund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:32
CPC Classifications
H; H02; H02K; H02K9/00; H02K9/02; H02K9/04
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) | 1924-03-28 | 1924-09-27 | 1925-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1928-03-28 | 1928-09-27 | 1929-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1932-03-28 | 1932-09-27 | 1933-03-29 | $7700.00 | Window Closed / Lapsed |