Revision history of "Homework 2/4/11 901479977"

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  • curprev 05:08, 4 February 2011901479977 talk contribs 3,067 bytes +3,067 Created page with "'''Argument for Nonobviousness''' The clamp for vibrating shank plows, patent 2627798, is clearly a novel idea with utility in the world of farming. The question arises however..."