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| All Patents in class 184/5.1 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,361,007 | Dec. 07, 1920 | N.E. Brown | Center cleaning and oiling device | industrial machine lubrication | |
| 6,520,292 | Feb. 18, 2003 | M.C. Negley, S.R. Kurtz | Apparatus for Packing Grease in Bearings | grease packers | |