US1607002A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric-motor-control system
Assignee: Individual
•
Filing: 1925-02-21
•
Granted: 1926-11-16
•
Expires: 1945-02-21
Abstract
No abstract record available.
Inventors
- 👤 George M Keller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:07
CPC Classifications
B; B60; B60L; B60L15/00; B60L15/02; B60L15/04; Y; Y02; Y02T; Y02T10/00; Y02T10/60; Y02T10/64
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) | 1929-11-15 | 1930-05-17 | 1930-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1933-11-15 | 1934-05-17 | 1934-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1937-11-15 | 1938-05-17 | 1938-11-16 | $7700.00 | Window Closed / Lapsed |