Patent US2827985A successfully refreshed from Google Patents.
US2827985A
Expired / Lapsed
US
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Mechanical servo brake
Assignee: Dunlop Rubber Co Ltd
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Filing: 1955-03-07
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Granted: 1958-03-25
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Expires: 1975-03-07
Abstract
No abstract record available.
Inventors
- 👤 Butler Henry James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:47
CPC Classifications
B; B60; B60T; B60T13/00; B60T13/02; F; F16; F16D; F16D55/00; F16D55/02; F16D55/22; F16D55/24; F16D55/46; F16D55/50
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) | 1961-03-24 | 1961-09-23 | 1962-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-24 | 1965-09-23 | 1966-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-24 | 1969-09-23 | 1970-03-25 | $7700.00 | Window Closed / Lapsed |