73283167
Oct 24, 1980
May 18, 1982
HELMUT FISCHER GMBH INSTITUT FUR ELEKTRONIK UND MESSTECHNIK
Active Trademark
Electronic Measuring Instruments-Namely, DC Porosity Holiday Testers for Measuring the Properties of Layers Having a Thickness in the Range of 0.1 Micrometers to 4 Decimeters
Electrical and Scientific Apparatus