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| All Patents in class 384/291 | |||||
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| Picture | Number | Date | Patentee | Title | |
| 429,507 | Jun. 03, 1890 | C.M. Conradson | Pulley | ||
 | 444,812 | Jan. 20, 1891 | W.W. Carey | Self-lubricating device for pulleys | |
| 1,559,879 | Nov. 03, 1925 | E.C. Hutchinson | Bearing Construction | ||
 | 1,733,931 | Oct. 29, 1929 | G.A. Arnold | Lubricating bearing | |
| 2,566,080 | Aug. 28, 1951 | J.H. Davids | Bushing Assembly | ||