Duotect Trademarks

DUOTECT
electronic device for detecting motion in video input signals
Abandoned  ·  July 14, 1995  ·  74701281  · 
DUOTECT
EXPLOSION-PROOF PRESSURE SWITCHES
Registered  ·  November 8, 1972  ·  72440639  · 
duotect
DUOTECTOR
passive infrared motion detectors
Cancelled  ·  April 20, 1995  ·  74663644  · 
DUOTECTOR
microwave/PIR motion detector
Abandoned  ·  February 1, 1994  ·  74485056  ·