C 21.5:1219/1
OFFICIAL GAZETTE OF THE UNITED STATES PATENT AND TRADEMARK OFFICE... PATENTS... VOL. 1219, NUMBER 1... U.S. DEPARTMENT OF COMMERCE... FEBRUA
0260-B
990405M
990423
C 21.5:1219/2
OFFICIAL GAZETTE OF THE UNITED STATES PATENT AND TRADEMARK OFFICE... PATENTS... VOL. 1219, NUMBER 2... U.S. DEPARTMENT OF COMMERCE... FEBRUA