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Class Information
Number: 244/67
Name: Aeronautics > Aircraft propulsion > Screw > Body encircling
Description: Aircraft screw propellers arranged to rotate about the external periphery of aircraft bodies.

Patents under this class:

Patent Number Title Of Patent Date Issued
6450445 Stabilizing control apparatus for robtic or remotely controlled flying platform Sep. 17, 2002
5503351 Circular wing aircraft Apr. 2, 1996
4657209 Ducted propeller aircraft Apr. 14, 1987
4560119 Lightweight aircraft Dec. 24, 1985
4544115 Ducted propeller aircraft Oct. 1, 1985
4482110 Cyclorotor composite aircraft Nov. 13, 1984
4371133 Ducted propeller aircraft Feb. 1, 1983

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