All mercantile and industrial establishments, other than lawfully chartered corporations and individuals conducting their businesses under and in their own individual names having a place of business in this State, shall file with the clerk of the court of the county in which the principal place of business of each such mercantile or industrial establishment is located the name or names of the owner or owners or proprietor or proprietors thereof and, in case of partnerships, the name of each partner and they shall exhibit on a sign or alongside the entrance of each place of business of such mercantile or industrial establishment the name or names of the owner or owners or proprietor or proprietors thereof, including the name of each partner of a partnership, such name or names to be printed in Roman letters of such size as to be read easily.