(a) The Commissioner shall issue licenses to such persons who have been certified by the Committee as having successfully passed said examination for journeyman plumber or plumbing contractor, as the case may be, and who have paid the fees and have otherwise complied with the applicable requirements of this act.
(b) The Commissioner shall, upon proper application and payment of fees within ninety (90) days from and after the effective date of this act, but not thereafter, issue licenses without examination to persons who, on the effective date of this act, hold an unexpired license as a journeyman plumber or master plumber or plumbing contractor which has been issued by a city or incorporated town of this state, and who have otherwise complied with the requirements of this act. Said license must be produced as a prerequisite to obtaining a state license if applicant is a resident of a city or town having a licensing law.
(c) The Commissioner shall, upon proper application and payment of fees within ninety (90) days from and after the effective date of this act, but not thereafter, issue licenses without examination to persons from towns or cities of less than two thousand (2,000) population who show proof satisfactory to the Commissioner that they were, on the effective date of this act and for a period of one (1) year prior thereto, engaged in the occupation, trade or business of journeyman plumber, or master plumber, or plumbing contractor, as the case may be, and who has otherwise complied with the requirements of this act.
(d) All licenses shall be nontransferable and it shall be unlawful for any holder of a license under this act to loan or allow the use of such license by any other person, firm or corporation, except as specifically provided in this act.