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| Patents for Walter Knapp | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 1,888,679 | Nov. 22, 1932 | W. Knapp | Safety device for cutting machines | |
 | 2,022,288 | Nov. 26, 1935 | W. Knapp | Tool holder | |
 | 2,022,289 | Nov. 26, 1935 | W. Knapp | Tool holder | |
 | 2,185,304 | Jan. 02, 1940 | W. Knapp | Reciprocatory carriage structure | |
 | 2,729,758 | Jan. 03, 1956 | W. Knapp | Electric motor | |
 | 2,744,550 | May 08, 1956 | W. Knapp | Multiple position woodworking machine | |
 | 2,752,959 | Jul. 03, 1956 | W. Knapp | Multiple position woodworking machine | |