It's also not "illegal" to sell assisted opening knives anywhere in Indiana since they do not violate any actual laws. Each and every assisted opening design on the market was specifically designed not not violate any switchblade or autmomatic knife laws.
Then what does IC 35-47-5-2 mean? The display, offer, or sell clause would mean that those guys at the gun shows are selling the knives illegally right? So none of the "automatic" knives are actually automatic? Hmmm, confusing me thinks.