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| Patents for H. D. Penney | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 851,351 | Apr. 23, 1907 | A. Hanley | Combination Tool | |
 | D46,779 | Dec. 15, 1914 | H.W. Pleister | Housing for breast drills | |
| 1,157,227 | Oct. 19, 1915 | H. Kienzle | Mechanical lathe control | ||