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Leadholder or Related Patent Thumbnail Index |
 http://leadholder.com/pat-us-d119006-1939-eagle_3375.html |
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date of application date granted inventor assignee patent holder country |
1939 December 23 1940 February 13 William O. Ponath Eagle Pencil Company United States |
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| patent employed on |
 Eagle Turquoise 3375 |
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