Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Browse by Category: Main > Communications
Class Information
Number: 342/28
Name: Communications: directive radio wave systems and devices (e.g., radar, radio navigation) > Presence detection only > By motion detection
Description: Subject matter wherein the presence of a target is detected by sensing target movement.










Patents under this class:
1 2 3 4 5 6 7 8

Patent Number Title Of Patent Date Issued
3990081 Doppler radar device Nov. 2, 1976
3987427 Doppler detection device with phase shift means to inhibit false alarms Oct. 19, 1976
3986182 Multi-zone intrusion detection system Oct. 12, 1976
3967283 Large area motion sensor Jun. 29, 1976
3964063 Traffic-surveillance system Jun. 15, 1976
3947834 Doppler perimeter intrusion alarm system using a leaky waveguide Mar. 30, 1976
3943513 System and method for selecting Doppler altered reflected signals Mar. 9, 1976
3942178 Intrusion detection system Mar. 2, 1976
3932871 FM/CW surveillance radar system with range gating Jan. 13, 1976

1 2 3 4 5 6 7 8










 
 
  Recently Added Patents
Self-diagnostic method and system for implantable cardiac device
SONOS stack with split nitride memory layer
Mixture, especially spinning solution
Lifting apparatus
Door-activated entry light fixture
Tungsten barrier and seed for copper filled TSV
Pre-distortion architecture for compensating non-linear effects
  Randomly Featured Patents
Image pickup apparatus
Media jack with switch for LAN and modem connection
Micro perfusion device
Carnation named Londanelle
Set of automotive floor mats
High performance, low cost mirror for a rear projection television
Corrosion monitoring system
Advanced desktop reporting
Thiazole compound and a process thereof
PCV-2 vaccine