75545517
Aug 31, 1998
Nov 14, 2000
Active Trademark
aerosol calibrating and quantification devices, namely, calibrated containers for gas; vapor measuring devices comprised of gas sample collection devices comprised of gas analyzers; disposable gas and liquid storage containers for calibrating and quantifying gas, disposable permeable diffusion gas containers for calibrating and quantifying gas; portable field use gas permeation calibrators; personal mounted gas detectors and explosive detectors
Electrical and Scientific Apparatus