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Leadholder or Related Patent Thumbnail Index |
 http://leadholder.com/pat-us00033034-1861-awf.html |
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date of application date granted inventor assignee patent holder country |
unknown 1861 August 13 Johann Lothar Faber (A.W. Faber) Germany |
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| patent employed on |
 A.W. Faber Artists' Pencil |
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