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Class Information
Number: 342/74
Name: Communications: directive radio wave systems and devices (e.g., radar, radio navigation) > Return signal controls radar system > Antenna control
Description: Subject matter including control by the returned signal of the radar system antenna.

Sub-classes under this class:

Class Number Class Name Patents
342/81 Beam direction by phase or frequency control 149
342/75 Physical orientation 130

Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
5065162 Communication system for helicopter Nov. 12, 1991
4843398 Tracking radar system Jun. 27, 1989
4696053 Antenna alignment system and method Sep. 22, 1987
4306235 Multiple frequency microwave antenna Dec. 15, 1981
4241346 Pulse radar altimeters Dec. 23, 1980

1 2 3 4

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