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…be deemed to be a weapon for the purposes of this policy;
(g) any knife, commonly referred to as a switch-blade, which has a blade that opens
automatically by hand pressure applied to a button, spring or other device in the handle of
gravity or by an outward, downward or centrifugal thrust or movement;
(h) any straight-blade knife of four inches or more…
https://www.wichita.edu/about/wsunews/archive/images/ch11_19.pdf