Wolfgang Wilhelm Helmut KindlerBRUEL & KJÆR SOUND & VIBRATION MEASUREMENT A/S, BRüEL & KJÆR VIBRO A/S, BRUEL & KJÆR ASSET A/S, Hottinger Brüel & Kjær A/S, Hottinger Brüel & Kjær A/S, BRUEL & KJÆR HOLDING A/S, BRUEL & KJÆR HOLDING A/S, BTG DANMARK A/S