No one here is going to research the laws of all 50 states to satisfy your curiosity. Incidentally, most state laws do not describe them as "butterfly" knives. They are usually covered under the classification of "gravity knives" and occasionally referred to as Balisongs.
butterfly knives are legal but they must be under 3.5 inches. Balisong trainers are legal however.
Balisong knives, also called butterfly knives, are legal in Illinois.
yes
Yes
no butterfly knives are legal in nc i just wouldn't carry one around anywhere
If you have a flying liscense.
NO! they are a prohibited weapon
Butterfly knives are illegal only if you are carrying them with intent to harm. It is legal for you to own them and keep them at home--for collection. You can also get a trainer, this is legal to carry.
Yes they are
yes it is i think
No they are still illegal in Washington
Butterfly knives are legal to own in Kansas, but there are restrictions on carrying them in public places. It is illegal to carry a butterfly knife with the intent to use it unlawfully against another person.