US2941631A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vibration damping devices for use with drum brakes
Assignee: National Research Development Corp UK
•
Filing: 1957-03-04
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Granted: 1960-06-21
•
Expires: 1977-03-04
Abstract
No abstract record available.
Inventors
- 👤 Fosberry Ronald Alfred Caleb
- 👤 Holubecki Zbigniew
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:11
CPC Classifications
F; F16; F16D; F16D65/00; F16D65/02; F16D65/10; F16D65/0006; F16D2065/13; F16D2065/1304; F16D2065/1332
Claims Analysis
Total Claims: 0
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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) | 1963-06-21 | 1963-12-21 | 1964-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-21 | 1967-12-21 | 1968-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-21 | 1971-12-21 | 1972-06-21 | $7700.00 | Window Closed / Lapsed |