On September 30, 1987, Foster filed an application with the United States Patent and Trademark Office to patent his invented sport. The patent application covered the rules of the game, specifically detailing the goalposts and rebound netting and their impact on gameplay. Foster's application was granted on March 27, 1990. The patent expired on September 30, 2007. COUNT 4
QSN1 On what date did Foster apply for a patent on arena football? ANS1 September 30, 1987 QSN2 When did the United States Patent and Trademark Office grant Foster's patent? ANS2 March 27, 1990 QSN3 On what date was the expiration of Foster's patent? ANS3 September 30, 2007 QSN4 With whom did Foster file his patent? ANS4 the United States Patent and Trademark Office