SHAFFER TOOL WORKS
OIL WELL DRILLING AND OPERATING TOOLS AND EQUIPMENT-NAMELY, FLOW BEANS, CASING HEADS, PACK-OFF ATTACHMENTS, LANDING BASES, BLOW-OUT PREVENTERS, BUSHINGS, INSIDE CASING CUTTERS, CELLAR GATES, COMBINATION HEADS, OUTSIDE DRILL PIPE CUTTERS, DRILLING HOOK-UPS, FISHING TOOLS, ROD GRIPS, HAND WHEELS FOR CELLAR GATES, LINER HANGERS, TUBING HEADS, UNIVER-SAL JOINTS FOR CONTROL GATES, MUD CROSSES, PACKING-OFF ATTACHMENTS FOR SPEARS, PRODUCTION HOOK-UPS, RAMS FOR GATES, RELEASING SOCKETS, RELEASING SPE...
Expired · October 27, 1947 · 71539220 ·