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| All Patents in class 384/397 | |||||
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| Number | Date | Patentee | Title | Type | |
| RE5,323 | Mar. 11, 1873 | H.W. Thayer | Improvement in journal-boxes | industrial machine bearings | |
| 1,970,199 | Aug. 14, 1934 | J.C. Sharp | Bushing for Locomotive Valve Motions | steam engine valve gear | |