US1980951A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motor control system
Assignee: BBC Brown Boveri AG Germany
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Filing: 1930-10-03
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Granted: 1934-11-13
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Expires: 1950-10-03
Abstract
No abstract record available.
Inventors
- 👤 Buchhold Theodor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:00
CPC Classifications
B; B60; B60L; B60L15/00; B60L15/20; B60L15/22; B60L2200/00; B60L2200/26; Y; Y02; Y02T; Y02T10/00; Y02T10/60; Y02T10/64; Y02T10/72
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) | 1937-11-12 | 1938-05-14 | 1938-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1941-11-12 | 1942-05-14 | 1942-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1945-11-12 | 1946-05-14 | 1946-11-13 | $7700.00 | Window Closed / Lapsed |