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| Patents for Pneumatic & Electric Tool Co. | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 464,820 | Dec. 08, 1891 | D. Drawbaugh | Pneumatic Tool for rock-cutting | |
 | 504,802 | Sep. 12, 1893 | D. Drawbaugh | Pneumatic tool | |
 | 504,803 | Sep. 12, 1893 | D. Drawbaugh | Pneumatic tool | |
 | 530,934 | Dec. 18, 1894 | D. Drawbaugh | Pneumatic tool | |