| JEWELRING Helmut Fischer G.m.b.H. & Co. Institut fur Elektronik und Messtechnik
73204786 23 Feb 1979 | on 25 May 2002 | Platens for Beta-Backscatter Radiation Measuring Instruments, Used in ... Class 009 Class 009 Computer & Software Products & Electrical & Scientific Products Platens for Beta-Backscatter Radiation Measuring Instruments, Used in Measuring Thin Films | | | MULTI 1000 S Helmut Fischer GmbH & Co. Institut fur Elektronik und Messtechnik
74410294 06 Jul 1993 | on 11 Nov 1994 | variable electronic test assemblies with data handling, sensors and me... Class 009 Class 009 Computer & Software Products & Electrical & Scientific Products variable electronic test assemblies with data handling, sensors and measuring instruments that can be connected to them, for measurement of layer thicknesses in the range of monolayers up to 10 cm by use of magnetic induction methods or eddy current methods or beta-ray back-scattering methods, for measurement of conductivity of nonferrous metals by means of phase angle measurements, with and without use of a temperature sensor, for measurement of copper layer thicknesses in through-platings of circuit boards, and for determination of ferrite content | |