Football Throwing Machine: U.S. Pat. No. 4,596,230, issued Jun. 24, 1986: Revision history

24 January 2011

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• curprev 11:2411:24, 24 January 2011‎ Sbonomo talk contribs‎ 762 bytes +762‎ Created page with " This patent proposes a device designed to launch American footballs along multiple axes and with varying degrees and directions of spin. The device uses oppositely rotating whe..."