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| Patents for John Hausman | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 309,620 | Dec. 23, 1884 | J. Hausman | Hammer Dies | |
 | 953,031 | Mar. 29, 1910 | J. Hausman, J.C. Blevney | Grinding and polishing machine | |
 | 980,052 | Dec. 27, 1910 | J. Hausman, J.C. Blevney | Grinding and polishing machine | |
 | 980,053 | Dec. 27, 1910 | J. Hausman, J.C. Blevney | Grinding and polishing machine | |
 | 980,054 | Dec. 27, 1910 | J. Hausman, J.C. Blevney | Abrasive machine | |