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Leadholder or Related Patent Thumbnail Index |
 http://leadholder.com/pat-us03042003-1956-trupoint_adj.html |
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date of application date granted inventor assignee patent holder country |
1956 February 16 1962 July 3 Edward L. Cayo Virgil Dorstewitz United States |
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| patent employed on |
 Tru-Point Variable Taper Lead Pointer
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