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Patents for Gerhold L. Otto | |||||
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Picture | Number | Date | Patentee | Title | |
![]() | 2,697,952 | Dec. 28, 1954 | G.L. Otto | Continuously operating machine tool | |
![]() | 2,701,482 | Feb. 08, 1955 | G.L. Otto | Milling and center-drilling machine |