C 21.5:1221/1
OFFICIAL GAZETTE OF THE UNITED STATES PATENT AND TRADEMARK OFFICE... PATENTS... VOL. 1221, NUMBER 1... U.S. DEPARTMENT OF COMMERCE... APRIL
0260-B
990548M
990604
C 21.5:1221/2
OFFICIAL GAZETTE OF THE UNITED STATES PATENT AND TRADEMARK OFFICE... PATENTS... VOL. 1221, NUMBER 2... U.S. DEPARTMENT OF COMMERCE... APRIL