Resources Contact Us Home
Browse by Category: Main > Communications
Class Information
Number: 342/438
Name: Communications: directive radio wave systems and devices (e.g., radar, radio navigation) > Directive > Beacon or receiver > Direction-finding receiver only > With plural fixed antenna pattern comparing > Including separate indicators
Description: Subject matter wherein the comparison is made by use of two or more distinct indicating devices.

Patents under this class:

Patent Number Title Of Patent Date Issued
8686913 Differential vector sensor Apr. 1, 2014
7755534 Radar sensor for receiving radar wave while judging existence of wave attenuator Jul. 13, 2010
4475106 High sensitivity portable radio direction finder Oct. 2, 1984
4263597 Nondisruptive ADF system Apr. 21, 1981
4177467 Waveguide receiving antenna Dec. 4, 1979
3965473 Direction finders Jun. 22, 1976
3936832 System to process antenna beams to obtain the angular location of target with high resolution and accuracy Feb. 3, 1976

  Recently Added Patents
Magnetoresistive element and manufacturing method of the same
Mobile electronic device
Systems and methods for identifying similar documents
System, method, and computer program product for determining whether an electronic mail message is compliant with an etiquette policy
Nonaqueous secondary battery with nitrile group-containing compound
System and method for measuring an analyte in a sample
Water purification using energy from a steam-hydrocarbon reforming process
  Randomly Featured Patents
Method and arrangement for noise floor estimation
Lens drive unit
Hose fittings
Production of styrene from ethylbenzene using azeotropic vaporization and low overall water to ethylbenzene ratios
High pressure pump
Temperature measuring probe
Acidic polycyclic ether useful as an anticoccidial agent and as a growth promotant
Multiple microphone photoacoustic leak detection and localization system and method
Electric toothbrushes
Scoop point buoy