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Patents for Willard E. Gerbing | |||||
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Picture | Number | Date | Patentee | Title | |
2,305,128 | Dec. 15, 1942 | L.J. Andresen, W.E. Gerbing | Variable speed feed mechanism | ||
2,475,954 | Jul. 12, 1949 | W.E. Gerbing | Variable speed pulley | ||
2,475,955 | Jul. 12, 1949 | W.E. Gerbing | Variable pitch pulley | ||
2,714,313 | Aug. 02, 1955 | W.E. Gerbing | Variable pitch pulley |