1930s Homer Clyde Snook

^ snook, homer clyde. (27 december 1932). method of casting ingots. u.s. patent no. 1,892,044. washington, dc: u.s. patent , trademark office.
^ snook, homer clyde. (5 june 1934). ingot casting method. u.s. patent no. 1,961,399. washington, dc: u.s. patent , trademark office.
^ snook, homer clyde. (16 april 1935). ingot casting apparatus. u.s. patent no. 1,998,258. washington, dc: u.s. patent , trademark office.
^ snook, homer clyde. (4 april 1939). microscopy. u.s. patent 2,153,010. washington, dc: u.s. patent , trademark office.