Heraeus Quarzglas GmbH Trademarks
TWINTECH
Filed: March 17, 1992
electrically heated industrial ovens
Owned by: Heraeus Quarzglas GmbH
Serial Number: 74256462
F 300 S
Filed: August 13, 1997
quartz glass and translucent fused quartz glass, semifinished quartz tubes, rods, plates and blocks for use in the industrial…
Owned by: Heraeus Quarzglas GmbH
Serial Number: 75340731