No person shall:
(1) Sell, barter, offer to sell, barter, or transfer or assign a license;
(2) Purchase or procure by barter a license with intent to use it as evidence of qualification to practice the fitting and selling of hearing aids;
(3) Alter a license with fraudulent intent;
(4) Use or attempt to use a license which is invalid because it was purchased, fraudulently obtained, forged, or materially altered;
(5) Make a false statement in an application for a license or in an application for renewal of a license; and
(6) Sell hearing aids through "door-to-door sales" as defined in section 481C-1.