US PATENT SUBCLASS 244 / 96
.~ Airship control

Current as of: June, 1999
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244 /   HD   AERONAUTICS

75 R  DF  AIRCRAFT CONTROL {8}
96.~ Airship control {3}
97  DF  .~.~> Buoyancy varying
98  DF  .~.~> Gas bag inflation
99  DF  .~.~> Gas release

DEFINITION

Classification: 244/96

(under subclass 75) Control devices and arrangements particularly adapted to use on lighter-than-air craft.

(1) Note. For control systems and devices applicable to aircraft generally, search must be made in this class, subclass 75, and indented subclasses.