. "A knife that contains a spring, detent, or other mechanism designed to create a bias toward closure of the blade and that requires physical exertion applied to the blade by hand, wrist, or arm to overcome the bias toward closure to assist in opening the knife is not a spring blade knife.[2012 c 179 ?? 1; 2011 c 13 ?? 1; 2007 c 379 ?? 1; 1994 sp.s. c 7 ?? 424; 1959 c 143 ?? 1; 1957 c 93 ?? 1; 1909" . . .