Review of aeronautical patents covering internal-combustion engine, control of internal-combustion engines, airplane, control of fuel-injection mechanism for internal combustion engines, aircraft communication apparatus, airplane, airplane propeller, unattended beacon, airship, rotary internal-combustion engine, aircraft and helicopter-control mechanism. (Aeronautical Eng. Sec.)
Patents issued
Aviation
Aviation ; 26 , n 11
1929
Aufsatz (Zeitschrift)
Englisch
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