| Patents for Charles Herfurth |
Patents 1 -
10
of 14
      |
| Picture | Number | Date | Patentee | Title |
| | 1,993,840 | Mar. 12, 1935 | C. Herfurth | Grinding Machine |
| | 2,006,554 | Jul. 02, 1935 | C. Herfurth | Grinding Machine |
| | 2,101,644 | Dec. 07, 1937 | C. Herfurth, H. Ernst, L.F. Nenninger | Grinding Machine |
| | 2,142,028 | Dec. 27, 1938 | C. Herfurth | Grinding Machine |
| | 2,164,875 | Jul. 04, 1939 | C. Herfurth | Grinding Machine |
| | 2,167,948 | Aug. 01, 1939 | K.T. Schledorn, C. Herfurth | Cambering Mechanism for Grinding Machines |
| | 2,170,304 | Aug. 22, 1939 | C. Herfurth | Truing Attachment |
| | 2,254,010 | Aug. 26, 1941 | R.D. Wortendyke, C. Herfurth | Grinding Machine |
| | 2,303,639 | Dec. 01, 1942 | R.D. Wortendyke, C. Herfurth | Grinding Machine |
| | 2,333,304 | Nov. 02, 1943 | C. Herfurth, A.H. Dall, H. Ernst | Surface Finishing Machinery |
