Nothing in this Chapter shall be construed as affecting the status of licensure of any professional engineer or land surveyor who is rightfully in possession of a certificate of licensure duly issued by the Board and valid as of July 1, 1975. (1951, c. 1084, s. 1; 1959, c. 1236, s. 2; 1975, c. 681, s. 1; 1998-118, s. 25.)