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