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Class Information
Number: 342/456.5
Name: Communications: directive radio wave systems and devices (e.g., radar, radio navigation) >
Description:

Sub-classes under this class:

Class Number	Class Name	Patents
342/1	Radio wave absorber	225
342/104	Determining velocity	257
342/118	Determining distance	449
342/13	Radar ew (electronic warfare)	380
342/147	Determining direction	205
342/159	Clutter elimination	502
342/165	Testing or calibrating of radar system	325
342/175	With particular circuit	853
342/21	Base band system	117
342/22	Transmission through media other than air or free space	395
342/23	Berthing or docking	18
342/24	Blind aid	20
342/25R	Synthetic aperture radar	171
342/26R	Radar for meteorological use (epo)	166
342/27	Presence detection only	391
342/29	Aircraft collision avoidance system (cas)	233
342/33	Aircraft landing system	100
342/350	Directive	50
342/36	Air traffic control	167
342/41	Ship collision avoidance	55
342/42	Radar transponder system	418
342/5	Radar reflector	104
342/52	Combined with diverse type radiant energy system	210
342/59	Plural radar	180
342/60	Transmitting intelligence	64
342/61	Return signal controls external device	135
342/73	Return signal controls radar system	66