US2515982A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dynamic braking system
Assignee: Westinghouse Electric Corp
•
Filing: 1947-03-08
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Granted: 1950-07-18
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Expires: 1967-03-08
Abstract
No abstract record available.
Inventors
- 👤 Maxwell D Brane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:46
CPC Classifications
B; B60; B60L; B60L7/00; B60L7/02; B60L7/04; B60L2200/00; B60L2200/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1317266A
Cited
USRE14861E
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-07-17 | 1954-01-16 | 1954-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-17 | 1958-01-16 | 1958-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-17 | 1962-01-16 | 1962-07-18 | $7700.00 | Window Closed / Lapsed |