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| Patents for John H. Dorman | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 943,009 | Dec. 14, 1909 | J.H. Dorman | Tapping and drilling tool | |
 | 1,338,682 | May 04, 1920 | J.H. Dorman | Jack | |
 | 1,367,307 | Feb. 01, 1921 | E.A. Dorman | Jack | |