Pennsylvania Statutes Title 53 P.S. Municipal and Quasi-Municipal Corporations § 25313. Classification of licenses

Licenses so granted shall be graded into two classes:  One of which shall entitle the licensee to have charge of or to operate stationary steam boilers and steam engines only;  the other of which shall entitle the licensee to have charge of or to operate portable steam boilers and steam engines only;  such licenses shall not be transferred from one grade to the other without a re-examination, said re-examination to be conducted without cost to the licensee.