Patent US3237731A successfully refreshed from Google Patents.
US3237731A
Expired / Lapsed
US
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Disc brake rotor construction
Assignee: Bendix Corp
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Filing: 1964-01-23
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Granted: 1966-03-01
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Expires: 1984-01-23
Abstract
No abstract record available.
Inventors
- 👤 Bois William H Du
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 05:39
CPC Classifications
F; F16; F16D; F16D55/00; F16D55/24; F16D55/26; F16D55/36; F16D55/40; F16D65/00; F16D65/02; F16D65/12; F16D65/121; F16D2055/0004; F16D2055/0058; F16D65/122
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-28 | 1969-08-30 | 1970-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-28 | 1973-08-30 | 1974-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-28 | 1977-08-30 | 1978-03-01 | $7700.00 | Window Closed / Lapsed |