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Patent US3425524A successfully refreshed from Google Patents.
US3425524A
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US
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Brake disc structure
Assignee: Dunlop Co Ltd
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Filing: 1966-07-05
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Granted: 1969-02-04
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Expires: 1986-07-05
Abstract
No abstract record available.
Inventors
- 👤 Douglas Dewar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:20
CPC Classifications
F; F16; F16D; F16D65/00; F16D65/02; F16D65/12; F16D65/125; F16D65/126; B; B64; B64C; B64C25/00; B64C25/32; B64C25/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2554874A
Cited
GB790100A
Cited
US2850118A
Cited
FR1225964A
Cited
US3105575A
Cited
US3208559A
Cited
US3306401A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-04 | 1972-08-05 | 1973-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-04 | 1976-08-05 | 1977-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-04 | 1980-08-05 | 1981-02-04 | $7700.00 | Window Closed / Lapsed |