Revision history of "Homework 2:Finding a patent between 1980-1990"

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  • curprev 15:19, 22 January 2011Hwong1 talk contribs 1,939 bytes +1,939 Created page with "'''CRUDE OIL REFINING Patent Number: 4,565,620 Date of Patent: Jan. 21, 1986''' Patent Summary: This patent was filed by Phillips Petroleum Company in Bartlesville, Oklah..."