This is Charlie’s patent and all of the patents that he referenced in his patent:

3,268,025 Filed Aug. 20, 1963, Patented Aug. 23, 1966, Charlie Fehn’s patent

1,107,990 Filed Sep. 24, 1913, Patented Aug, 18. 1914, Early 2WD motorcycle

1,139,622 Filed May 2, 1914, Patented May 18,1915, Early 2WD motorcycle

1,351,084 Filed Oct. 22, 1919, Patented Aug. 31, 1920, Early 4WD truck

2,357,338 Filed Aug. 7, 1943, Patented Sep. 5, 1944, Fluid drive details

2,435,021 Filed Mar. 11, 1944, Patented Jan. 27, 1948, 3WD trike

2,445,058 Filed Dec. 13, 1943, Patented Jul. 13, 1948, Fluid drive minibike

2,959,237 Filed Jul. 19, 1957, Patented Nov. 8, 1960, 4WD automobile

3,045,772 Filed Feb. 17, 1959, Patented Jul. 24, 1962, 2WD motorcycle