US2205252A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Induction-motor braking
Assignee: Westinghouse Electric Corp
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Filing: 1938-10-21
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Granted: 1940-06-18
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Expires: 1958-10-21
Abstract
No abstract record available.
Inventors
- 👤 Graham Quentin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:58
CPC Classifications
H; H02; H02P; H02P1/00; H02P1/16; H02P1/42; H02P3/00; H02P3/06; H02P3/18; H02P3/24
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) | 1943-06-18 | 1943-12-18 | 1944-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-06-18 | 1947-12-18 | 1948-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-06-18 | 1951-12-18 | 1952-06-18 | $7700.00 | Window Closed / Lapsed |