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| All Patents in class 200/61.42 | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 2,302,506 | Nov. 17, 1942 | J.H. Richards | Duplicating Attachment for Milling Machines | |
 | 4,088,856 | May 09, 1978 | L.W. Tebben | Perimeter safety switch mounted to support disposed remote from machine body | |