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| Patents for Klotz & Kromer Machine Co. | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 278,025 | May 22, 1883 | O. Kromer, F. Rinkleff | Spoke lathe | |
 | 333,016 | Dec. 22, 1885 | O. Kromer | Double reversible lathe | |
 | 336,813 | Feb. 23, 1886 | O. Kromer | Spoke lathe | |
 | 422,809 | Mar. 04, 1890 | O. Kromer | Spoke lathe | |