(a) After July 1, 1977 anyone involved in either the direct or indirect sale or distribution of hearing aids shall be licensed under this act. The license shall be conspicuously posted in the licensee's office or place of business. Duplicate licenses shall be issued by the board to valid license holders operating more than one (1) office, without additional payment. A license under this act confers upon the holder the right to select, fit or sell hearing aids.
(b) Nothing in this act prohibits a corporation, partnership, trust, association or like organization maintaining an established business address from engaging in the business of fitting, dispensing, selling or offering for sale hearing aids at retail without a license, if it employs only properly licensed persons in the direct sale or fitting of such products. Such corporations, partnerships, trusts, associations or like organizations shall file annually with the board a list of all licensed hearing aid specialists directly or indirectly employed by it.