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| Patents for N. A. Woodworth Co. | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 2,370,351 | Feb. 27, 1945 | E.F. Hohwart | Clamping fixture | |
 | CA-426,149 | Mar. 13, 1945 | E.F. Hohwart | Clamping fixture | |
 | 2,441,414 | May 11, 1948 | G. Hohwart, E.F. Hohwart, P.A. Smith | Drill press | |
 | 2,456,061 | Dec. 14, 1948 | G. Hohwart | Double end center lapping machines | |
 | 3,073,589 | Jan. 15, 1963 | G. Hohwart | Work clamping fixture | |
| CA-683,079 | Apr. 07, 1964 | G. Hohwart | Work clamping fixture | ||