US2997137A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic adjustment devices for brakes
Assignee: Dunlop Rubber Co Ltd
•
Filing: 1958-04-01
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Granted: 1961-08-22
•
Expires: 1978-04-01
Abstract
No abstract record available.
Inventors
- 👤 Hodkinson Harold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:58
CPC Classifications
F; F16; F16D; F16D55/00; F16D55/02; F16D55/22; F16D55/228; F16D65/00; F16D65/38; F16D65/40; F16D65/52; F16D65/54
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US636330A
Cited
US2358740A
Cited
US2657772A
Cited
GB717350A
Cited
US2790515A
Cited
US2866526A
Cited
US2808903A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-21 | 1965-02-20 | 1965-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-21 | 1969-02-20 | 1969-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-21 | 1973-02-20 | 1973-08-22 | $7700.00 | Window Closed / Lapsed |