Resources Contact Us Home
Browse by Category: Main > Communications
Class Information
Number: 342/415
Name: Communications: directive radio wave systems and devices (e.g., radar, radio navigation) > Directive > Beacon or receiver > With transmisson of bearing or position determinative signals > Fixed course or bearing indicating > Distinctive frequencies equi-signal type > Coded equi-signal (e.g., a and n type)
Description: Subject matter in which a beacon is caused to alternately radiate in accordance with either one of two fixed angularly disposed directional patterns with the alternations being so timed that the radiation is each pattern is interrupted in accordance with a code which is distinctive with that pattern.

Patents under this class:

Patent Number Title Of Patent Date Issued
7636620 Signal distribution device operating in aircraft instrumental landing systems Dec. 22, 2009
4721899 Combined air-direct testing simulator Jan. 26, 1988
4642647 Signal generator for radio navigation system Feb. 10, 1987
4298875 Aircraft collision avoidance system Nov. 3, 1981

  Recently Added Patents
Monofocal photographing lens assembly
Scalable security services for multicast in a router having integrated zone-based firewall
Magnetoresistive shield with coupled lateral magnet bias
Fluid conduit with PTC fabric heating
Proximity sensor arrangement in a mobile device
  Randomly Featured Patents
Adjustable connecting device for interconnecting seat and backrest members of a chair
Silver halide color photographic material containing an imidazotriazole cyan coupler
Azobenzene derivative, fluorescent particle and method of fabricating the same
Gloss controlling process
Generic data collection plugin and configuration file language for SMI-S based agents
Picture compression circuit
Methods and products for inhibiting growth of fungal pathogens on turfgrass
Control system for a hybrid vehicle
Remote hydraulic pressure intensifier
Meter module assembly