U.S. federal trademark · Serial No. 73019596 · Reg. No. 1038430
APPARATUS FOR USE IN CONNECTION WITH THE LAYING OF UNDERGROUND PIPELINES-NAMELY, LASER BEAM PROJECTORS, TARGETS UTILIZED WITH SAID PROJECTORS, GRADE DETERMINING DEVICES, BLOWERS, AND HARDWARE FOR MOUNTING ALL OF THE ABOVE COMPONENTS IN PREDETERMINED RELATIONSHIP TO EACH OTHER
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