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| Patents for Arthur C. Pletz | |||||
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| Number | Date | Patentee | Title | Type | |
| 948,825 | Feb. 08, 1910 | A.C. Pletz | Change-speed and reverse-drive mechanism | drill presses | |
| 1,089,152 | Mar. 03, 1914 | A.C. Pletz | Belt-shifter | industrial machine pulleys and belt drive mechanisms | |
| 1,213,253 | Jan. 23, 1917 | A.C. Pletz | Tapping or thread-cutting device | tapping machines | |
| 1,307,831 | Jun. 24, 1919 | A.C. Pletz | Drilling and tapping machine | drill presses | |