. . . . . . "1942" . . . "1942-12-07" . "U.S. Patent Office" . . . . . . . . . . . . . . "Commissioner of the" . . . . . "1862-05-21" . . . . . . . "Thomas Ewing III" . . . . . . . . "1862" . . . . . . . . . . . . . "Thomas Ewing III" . . .