Suiter Swantz IP takes a look back at past inventions and inventors with our Patent of the Day.  

On this day in 1943, Erich Spitzner was granted U.S. Patent No.2,322,324 for a GAME CARD. 

An excerpt from the patent states:

The objects of the invention are to provide an improved card or board of the character indicated in which the desired series of numbers or combinations thereof may be printed or permanently affixed directly to the main card, and convenient means provided for covering or marking the numbers as they are called whereby the desired or winning combinations may be shown or indicated; to provide a game card or device which may be manufactured at a minimum expense and which will be durable and efficient in use; to provide a game card having a plurality of numerals or indicia thereon and individual slides for covering the numbers as they are called, and also for showing or indicating the numbers thus covered; to provide a bingo card, or the like, having the numbers printed thereon and having guideways adjacent to the respective numbers with slidable transparent indicators or shutters for temporarily covering the numbers as they are called.

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Game Card BINGO Patent