Hyloplate Trademarks

HYLOPLATE
PREPARATION FOR RENEWING THE SURFACE OF WRITING BOARDS SUCH AS CHALKBOARDS, SLATEBOARDS AND BLACKBOARDS
Cancelled  ·  August 2, 1989  ·  73816537  · 
HYLOPLATE
WRITING BOARDS, ALSO KNOWN AS BLACKBOARDS
Expired  ·  August 28, 1947  ·  71532785  · 
HYLOPLATE
BOOK PAPER
Expired  ·  July 29, 1922  ·  71167572  ·