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| All Patents in class 222/340 | |||||
| Number | Date | Patentee | Title | Type | |
| 1,720,890 | Jul. 16, 1929 | D.F. Fesler | Lubricant Compressor | grease guns | |
| 2,314,959 | Mar. 30, 1943 | C.W. Wehe | Powdered soap dispenser | ||
| 2,394,488 | Feb. 05, 1946 | V.G. Klein, L.C. Rotter | Lubricating Apparatus | ||
| 2,886,215 | May 12, 1959 | O.C. Lyles, J.R. Graef, V.G. Klein | Lubricant Gun | grease guns | |