US PATENT SUBCLASS 89 / 41.21
.~.~.~ On aircraft

Current as of: June, 1999
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89 /   HD   ORDNANCE

37.01  DF  MOUNTS {18}
41.01  DF  .~ Training mechanisms {5}
41.19  DF  .~.~ Sights or line devices {2}
41.21.~.~.~ On aircraft

DEFINITION

Classification: 89/41.21

On aircraft:

(under subclass 41.19) Devices wherein the aiming sight device is mounted on the structure of an aircraft.

SEE OR SEARCH CLASS

33, Geometrical Instruments,

229+, for bombsights.