US1915069A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synchronous induction motor
Assignee: General Electric Co
•
Filing: 1931-09-29
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Granted: 1933-06-20
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Expires: 1951-09-29
Abstract
No abstract record available.
Inventors
- 👤 Wayne J Morrill
- 👤 William A Pringle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:06
CPC Classifications
H; H02; H02K; H02K19/00; H02K19/02; H02K19/14
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) | 1936-06-19 | 1936-12-19 | 1937-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-06-19 | 1940-12-19 | 1941-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-06-19 | 1944-12-19 | 1945-06-20 | $7700.00 | Window Closed / Lapsed |