HOFFMAN BROTHERS DRILLING COMPANY Trademarks
GLACERAM
Filed: July 2, 1962
DIAMOND CORE BITS USED IN DRILLING MATERIALS SUCH AS GLASS, CERAMICS, AND PORCELAIN
Owned by: HOFFMAN BROTHERS DRILLING COMPANY
Serial Number: 72148186
METORAM
Filed: July 2, 1962
DIAMOND CORE BITS USED IN DRILLING METALS AND METALLIC MATERIALS
Owned by: HOFFMAN BROTHERS DRILLING COMPANY
Serial Number: 72148187
REFRACTORAM
Filed: July 2, 1962
DIAMOND CORE BITS USED IN DRILLING REFRACTORY AND CONCRETE-LIKE MATERIALS
Owned by: HOFFMAN BROTHERS DRILLING COMPANY
Serial Number: 72148188
