Patent US2740502A successfully refreshed from Google Patents.
US2740502A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air cooled wheel brake
Assignee: Old Carco LLC
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Filing: 1951-05-10
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Granted: 1956-04-03
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Expires: 1971-05-10
Abstract
No abstract record available.
Inventors
- 👤 John P Butterfield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:51
CPC Classifications
F; F16; F16D; F16D65/00; F16D65/78; F16D65/82; F16D65/827
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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GB434610A
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US2053735A
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US2143950A
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US2179656A
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US2248684A
Cited
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US2274503A
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US2414156A
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US2441008A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-04-03 | 1959-10-03 | 1960-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-03 | 1963-10-03 | 1964-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-03 | 1967-10-03 | 1968-04-03 | $7700.00 | Window Closed / Lapsed |