Before any bingo card becomes the property of a licensed organization, the supplier or manufacturer shall print on the playing side of the bingo card the license number assigned to the supplier of the card by the department.
Wis. Admin. Code Department of Administration [Gaming] Game 41.03
The treatment of this section by the amendment published in May, 2005 first applies to the sale of bingo cards by a licensed bingo supplier on January 1, 2006.