Patent US2454291A successfully refreshed from Google Patents.
US2454291A
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US
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Brake control apparatus
Assignee: Empire Electric Brake Co
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Filing: 1945-07-31
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Granted: 1948-11-23
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Expires: 1965-07-31
Abstract
No abstract record available.
Inventors
- 👤 William F Penrose
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:24
CPC Classifications
B; B60; B60T; B60T13/00; B60T13/10; B60T13/58
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1818920A
Cited
US1944205A
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US2248301A
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US2283378A
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US2215172A
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US2260641A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-11-23 | 1952-05-24 | 1952-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-11-23 | 1956-05-24 | 1956-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-11-23 | 1960-05-24 | 1960-11-23 | $7700.00 | Window Closed / Lapsed |