DONOHO CLAY COMPANY Trademarks
MELTZONA
Filed: September 29, 1958
HIGH SILICA REFRACTORY CLAY
Owned by: DONOHO CLAY COMPANY
Serial Number: 72059700
BLASTPATCH
Filed: September 29, 1958
HIGH SILICA REFRACTORY CLAY
Owned by: DONOHO CLAY COMPANY
Serial Number: 72059701
