US2861657A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic slack adjuster for brake
Assignee: Caterpillar Industrial Inc
•
Filing: 1953-09-23
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Granted: 1958-11-25
•
Expires: 1973-09-23
Abstract
No abstract record available.
Inventors
- 👤 Everett C Curtis
- 👤 John T Crawford
- 👤 Dafydd W Evans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:03
CPC Classifications
F; F16; F16D; F16D65/00; F16D65/38; F16D65/40; F16D65/52; F16D65/54; F16D65/546; Y; Y10; Y10T; Y10T74/00; Y10T74/21; Y10T74/2133; Y10T74/2141
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB125191A
Cited
US2228576A
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US2322492A
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US2414037A
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US2472697A
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US2533927A
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US2649168A
Cited
US2740499A
Cited
US2775321A
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US2730205A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-24 | 1962-05-26 | 1962-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-24 | 1966-05-26 | 1966-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-24 | 1970-05-26 | 1970-11-25 | $7700.00 | Window Closed / Lapsed |