US3485331A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sintered friction disc with projections
Assignee: Federal Mogul Bremsbelag GmbH
•
Filing: 1967-08-23
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Granted: 1969-12-23
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Expires: 1987-08-23
Abstract
No abstract record available.
Inventors
- 👤 Ulrich Volker
- 👤 Heinz Fabian
- 👤 Klaus Mertl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:57
CPC Classifications
F; F16; F16D; F16D69/00; F16D69/04; F16D69/0408; F16D2069/0425; F16D2069/045; F16D2069/0458; F16D2069/0491; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12021; Y10T428/12389
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2375211A
Cited
US2667948A
Cited
US2649525A
Cited
US2793427A
Cited
US3073424A
Cited
US3048250A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-22 | 1973-06-23 | 1973-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-22 | 1977-06-23 | 1977-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-22 | 1981-06-23 | 1981-12-23 | $7700.00 | Window Closed / Lapsed |