US PATENT SUBCLASS 244 / 139
.~ Entire aircraft
Current as of:
June, 1999
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244 /
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AERONAUTICS
138 R
DF
SAFETY LOWERING DEVICES
{4}
139
.~ Entire aircraft
DEFINITION
Classification: 244/139
(under subclass 138) Devices for safely lowering entire aircraft to the ground.
(1) Note. For lowering a plurality of aircraft parts
separately, see this class, subclass 138.