ON OR ABOUT NOV. 4, 1951, AS TO "INTEGRATED MICA"; ON OR ABOUT JAN. 28, 1952, AS TO THE TERM "SIGMA EM."
ON OR ABOUT NOV. 4, 1951, AS TO "INTEGRATED MICA"; ON OR ABOUT JAN. 28, 1952, AS TO THE TERM "SIGMA EM."
THE WORD "MICA" IS DISCLAIMED APART FROM THE MARK SHOWN.
THE GREEK LETTERS APPEARING ON THE DRAWING MEAN "SIGMA EM."
SIGMA EM