U.S. federal trademark · Serial No. 71306979 · Reg. No. 0280981
COMBINATION PNEUMATIC AND SLUICE CONVEYORS AND CONVEYING SYSTEMS COMPRISING A SYSTEM OF PIPES FORMING A CONDUIT AND MECHANISM OPERABLE TO CREATE A SUCTION THROUGH THE PIPES AND TO PROVIDE A SLUICE FOR CONVEYING ASH AND SIMILAR COMMINUTED MATERIAL
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