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| Patents for Dena Nelson | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 715,194 | Dec. 02, 1902 | P.M. Callahan | Combined Rule and Square | |
 | 785,847 | Mar. 28, 1905 | S.W. Akins | Butt-Hinge Gage | |
 | 793,561 | Jun. 27, 1905 | H. Bolthoff | Engine | |
| 857,514 | Jun. 18, 1907 | N.N. Beasley | Jointer Gauge | ||