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| Patents for J. D. Caplinger | |||||
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| Number | Date | Patentee | Title | Type | |
| 362,566 | May 10, 1887 | A. Beaudry | Machine for punching, shearing, &c., of metals | metal punching machines | |
| 566,176 | Aug. 18, 1896 | H. Hunt, Jr., H. Hunt | Combination Tool | bicycle or pocket wrenches | |
| 879,847 | Feb. 25, 1908 | T.R. Bell | Safety controlling mechanism | electric railroads | |
| 922,059 | May 18, 1909 | E.B. Stimpson | Rivet | rivets | |