Patent US1894804A successfully refreshed from Google Patents.
US1894804A
Expired / Lapsed
US
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Alternating current motor
Assignee: Wagner Electric Corp
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Filing: 1930-03-01
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Granted: 1933-01-17
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Expires: 1950-03-01
Abstract
No abstract record available.
Inventors
- 👤 Weichsel Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:34
CPC Classifications
H; H02; H02P; H02P1/00; H02P1/16; H02P1/42; H02P1/44
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) | 1936-01-17 | 1936-07-18 | 1937-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-01-17 | 1940-07-18 | 1941-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-01-17 | 1944-07-18 | 1945-01-17 | $7700.00 | Window Closed / Lapsed |