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Communications
Class Information
Number:
342/123
Name:
Communications: directive radio wave systems and devices (e.g., radar, radio navigation)
>
Determining distance
> Height finder
Description:
Subject matter including determining the distance from the earth"s surface to an aircraft from the ground.
Patents under this class:
1
2
Patent Number
Title Of Patent
Date Issued
4158840
3-D Radar comprising 2-D radar with height finding attachment
Jun. 19, 1979
4150378
Height finding radar
Apr. 17, 1979
3971020
Three dimensional radar system with integrated PPI presentation
Jul. 20, 1976
1
2
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