There's no maximum length restriction for folding(pen) knives.
There's no length restriction on fixed blades either, just can't carry them concealed.
Actually, same applies to switchblades. Legal to possess and carry(not concealed though) just not legal to buy or sell in the state.
Is clipped in pocket but hanging out enough that its in sight considered concealed?
Folding Knife with no more then a four inche blade
Is clipped in pocket but hanging out enough that its in sight considered concealed?
Folding Knife with no more then a four inche blade