US PATENT SUBCLASS 340 / 946
.~ Nonairplane (e.g., balloon or helicopter)

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

945  DF  AIRCRAFT ALARM OR INDICATING SYSTEMS {11}
946.~ Nonairplane (e.g., balloon or helicopter)

DEFINITION

Classification: 340/946

Nonairplane (e.g., balloon or helicopter):

(under subclass 945) Subject matter including aircraft whose lift is provided by other than functionally stationary airfoils.

SEE OR SEARCH CLASS

73, Measuring and Testing,

178, for helicopter navigation.

244, Aeronautics,

17.11+, for helicopters, per se, and subclasses 31+ for balloons, per se.