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| Patents for Louis K. De Bus | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 1,446,547 | Feb. 27, 1923 | J.M. Crowe | Valve for pneumatic tools | |
 | 1,485,010 | Feb. 26, 1924 | J.M. Crowe, J.E. Ash | Tool holder for pneumatic hammers | |
 | 1,554,790 | Sep. 22, 1925 | J.M. Crowe | Rivet catcher | |