72200 ⎘
Aircraft intended to be sustained without power plant; Powered hang-glider-type aircraft; Microlight-type aircraft Man-powered aircraft
HUMAN-POWERED AIRCRAFT
#2MECHANISM FOR PROPELLING HUMAN-POWERED VEHICLES BY MEANS OF LEVERS THAT PIVOT ON A HORIZONTAL AXIS AND/OR TWO PARALLEL AND SYMMETRICAL VERTICAL AXES
#3Flight system
#4Tambourine helicopter
#5Fluid mechanics of inertia, or acceleration mechanics, or simplified calculus
#6System and apparatus for propelling and carrying a user within a confined interior