MARKSON SCIENCE, INC. Trademarks
TEFMARK
Filed: September 7, 1990
pH-reference electrodes for scientific instrumentation use
Owned by: MARKSON SCIENCE, INC.
Serial Number: 74094490
DURAMARK
Filed: September 7, 1990
epoxy-body composition pH electrodes for scientific instrumentation use
Owned by: MARKSON SCIENCE, INC.
Serial Number: 74094584
