Patents - Inventor Surname "Gray"
Gray, J. B. 1841/09/18 -> 2261 - > 
Gray, Raymond K. 1921/08/09 -> 1386778 - > 
Gray, Raymond K. 1946/09/24 -> 2408137 - > 
Gray, Rollin Lester 1946/09/24 -> 2408137 - >
Gray, Thomas J. 1946/01/22 -> 2393465 - > 
5 Patents Listed