About 15 Trademarks found that are owned by T D WIlliamson Inc.

Flow Sonic

pigs for transmitting through the interior of pipelines or other flow conduits for cleaning, filling, gauging, evacuating, and product separation therein

HEATING PIPE LINES FOR OTHERS FOR STRESS RELIEVING, PREHEATING, LINE AND PROCESS THAWING, REFRACTORY CURING, ANNEALING AND PIPE ALIGNMENT

MACHINES FOR PLUGGING PIPELINES AND OTHER FLUID CONDUCTING CONDUITS

INSTRUMENTS AND EQUIPMENT-NAMELY, DETECTOR UNIT FOR SURVEYING THE INTERIOR OF A PIPELINE AS IT PASSES THROUGH, ELECTRO-MECHANICAL TOW CABLEAND ELECTRONIC DATA CONSOLE AND RECORDER, FOR SURVEYING, INSPECTING AND MEASURING PIPELINES AND OTHER FLOW CONDUITS

INSTRUMENTS AND EQUIPMENT-NAMELY, DETECTOR UNIT FOR SURVEYING THE INTERIOR OF A PIPELINE AS IT PASSES THROUGH, ELECTRO-MECHANICAL TOW CABLEAND ELECTRONIC DATA CONSOLE AND RECORDER, FOR SURVEYING, INSPECTING AND MEASURING PIPELINES AND OTHER FLOW CONDUITS