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| Patents for Hohenstein Mfg. Co. | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 383,225 | May 22, 1888 | A.G. Hohenstein | Pressure-regulator | |
 | 383,226 | May 22, 1888 | A.G. Hohenstein | Automatic pressure-regulator and safety-valve | |