Md. Code, Bus. Reg. § 17-1905

(a) The Comptroller shall print and deliver to the clerk a license sticker for each vending machine. (b) The clerk shall give each vending machine licensee a license sticker for each vending machine. (c) (1) Subject to regulations adopted by the Comptroller, the license sticker shall be attached to the vending machine so that the identification label is easily visible. (2) In addition, the name and telephone number of the vending machine licensee or owner of the vending machine shall be displayed on each vending machine so that the name and telephone number are easily visible. (d) (1) If an inspector finds that a vending machine does not display the license sticker required by this section, the inspector promptly shall: (i) notify the vending machine licensee or owner in writing of the violation; and (ii) require that the vending machine licensee or owner display the license sticker properly within 10 days after receiving notice of the violation. (2) If the vending machine licensee or owner fails to display the license sticker properly within 10 days, the inspector shall: (i) seal the vending machine to prevent further use; and (ii) take necessary action to enforce the licensing provisions of this subtitle. (3) If neither the license sticker nor the name and telephone number of the vending machine licensee or owner are displayed properly, the inspector: (i) immediately shall seal the vending machine to prevent further use; and (ii) shall take necessary action to enforce this subtitle.