Maryland Statutes
Subtitle 5 - Miscellaneous Provisions
Section 12-504 - Contents of Advertisement

Each plumbing advertisement in the name of a person who engages in the business of providing plumbing services shall contain the license number and name of a master plumber or holder of a limited master plumber license whom the person employs and designates to direct and control the provision of plumbing services through the business of the person.