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2007-04-16 17:24 Epolk 385×608× (33273 bytes) Image of an averruncator from United States Patent Application 877220. G.F. Nilson - Jan 21, 1908 http://patft.uspto.gov/netacgi/nph-Parser?patentnumber=877220 {{PD-US-patent}} [[Category:Images of tools]]
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