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Class Information
Number: 342/37
Name: Communications: directive radio wave systems and devices (e.g., radar, radio navigation) > Air traffic control > Secondary surveilance radar (ssr) or air traffic control radar beacon system (atcrbs)
Description: Subject matter including a radar beacon-transponder means to maintain cognizance or to regulate the paths of selected vehicles within a selected area such as an airport terminal area or air route.

Sub-classes under this class:

Class Number Class Name Patents
342/38 With altitude information 45
342/40 With defruiting or degarbling 56
342/39 With side lobe suppression 28

Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
RE29260 Proximity indication with range and bearing measurements Jun. 7, 1977

1 2 3 4

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