US PATENT SUBCLASS 340 / 954
.~.~.~.~ Alignment of plural sources

Current as of: June, 1999
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340 /   HD   COMMUNICATIONS: ELECTRICAL

945  DF  AIRCRAFT ALARM OR INDICATING SYSTEMS {11}
947  DF  .~ Land-based landing guidance {5}
952  DF  .~.~ Particular energy guide source (e.g., sound, electric field, radio) {2}
953  DF  .~.~.~ Visual source {3}
954.~.~.~.~ Alignment of plural sources

DEFINITION

Classification: 340/954

Alignment of plural sources:

(under subclass 953) Subject matter wherein plural sources when seen in a particular alignment indicate the correct landing path.