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| Patents for ZIM Mfg. Co. | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,422,201 | Jul. 11, 1922 | M.H. Harter | Cotter Pin Puller | pliers | |
| 1,440,228 | Dec. 26, 1922 | P.O. Mamock | Piston-ring expander and remover | piston and ring maintenance | |
| 2,029,753 | Feb. 04, 1936 | H.A. Berkman | Tool for lapping valve seats | valve reseating tools | |