The Wright brothers did not claim Three Axis Control as their own invention but only Roll Control
There are two letters addressed by the Wright brothers to Octave Chanute (see 1 and 2) in which the two inventors repeated many times they were
"the first to maintain the lateral balance by adjusting the wing tips to different angles of incidence" (roll control). They did not mention the notion of "three axis control" and did not claim any breakthrough in governing an airplane on all three axis. Chanute had publicly criticized the two brothers for incorectly claiming roll control as their invention and in the two letters Wilbur Wright was simply furious and did not agree with Chanute maintaining that the world owes roll control only to him and Orville and to nobody else.
(1) Letter from 20 Jan 1910,
http://memory.loc.gov/cgi-bin/ampage?collId=mwright&fileName=06/06014/mwright06014.db&recNum=2&itemLink=D?wright:1:./temp/~ammem_naNN
(2) Letter from 29 Jan 1910,
http://memory.loc.gov/cgi-bin/ampage?collId=mwright&fileName=06/06014/mwright06014.db&recNum=6&itemLink=D?wright:1:./temp/~ammem_naNN