US2549217A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Friction brake cooling system
Assignee: Dana Inc
•
Filing: 1949-09-27
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Granted: 1951-04-17
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Expires: 1969-09-27
Abstract
No abstract record available.
Inventors
- 👤 James A Mason
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:44
CPC Classifications
F; F16; F16D; F16D65/00; F16D65/78; F16D65/84; F16D65/847; F16D55/00; F16D2121/00; F16D2121/18; F16D2121/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US992883A
Cited
US1434770A
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US1678945A
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US1614976A
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US1948037A
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US2481402A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-16 | 1954-10-16 | 1955-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-16 | 1958-10-16 | 1959-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-16 | 1962-10-16 | 1963-04-17 | $7700.00 | Window Closed / Lapsed |