Mark Identification
HI-FLEX
Serial Number
71579294
Filing Date
May 21, 1949
Registration Date
May 19, 1953
Trademark by
Classification Information
SCREW THREADS AND THREADED MEMBERS, SUCH AS JOINTS FOR DRILL PIPE CARRYING DRILLING BITS AND CORE-TAKING EQUIPMENT, SUBS, REDUCING SUBSTITUTES, DRILL COLLARS, AND SIMILAR THREADED COUPLING ELEMENTS ON EQUIPMENT USED IN DEEP WELL DRILLING
Yarns and Threads