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| Patents for ZIM Mfg. Co. | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 1,422,201 | Jul. 11, 1922 | M.H. Harter | Cotter Pin Puller | |
 | 1,440,228 | Dec. 26, 1922 | P.O. Mamock | Piston-ring expander and remover | |