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| Patents for E. F. Siedler | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 1,121,798 | Dec. 22, 1914 | P.E. Chapman | Drum-armature-winding machine | |
 | 1,396,728 | Nov. 15, 1921 | P.E. Chapman | Unreeling and tension device | |
 | 1,541,626 | Jun. 09, 1925 | P.E. Chapman | Taping machine | |