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| Patents for Ellen B. Tomlinson | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 464,074 | Dec. 01, 1891 | W. Johnson | Self-Marking Try-Square | |
 | 754,106 | Mar. 08, 1904 | W.D. Turner | Micrometer Caliper Attachment | |