Leon Pittman lock :eek: 5,615,484 4/14/1997 Pittman; Leon (Pendergrass, GA) assigned to Spyderco, Inc. (Golden, CO) - Cam Lock for Folding Knife) http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=5,615,484.PN.&OS=PN/5,615,4...