Pusey sold his patent to the Diamond Match Trust in 1896 and then served as the company 's patent attorney .
Pusey challenged Bowman 's patent , but Bowman 's patent was upheld .
Pusey sold Pusey 's patent to the Diamond Match Trust in 1896 and then served as the company 's patent attorney .
Pusey challenged Bowman 's patent , but Bowman 's patent was upheld .