Any such licensee, his clerk, agent or other person in charge of such premises, who refuses to admit thereto an officer authorized to enter the same, or who fails to exhibit to him on demand all such commodities, books and inventories; or any person who wilfully hinders, obstructs or prevents such officer from entering the premises or from making the examination authorized in N.H. Rev. Stat. § 322:7 shall be guilty of a misdemeanor.