| TURBOJETT BARRETT HAENTJENS & CO. OF PITTSBURGH
73476751 23 Apr 1984 | on 04 Nov 2006 | MACHINES FOR COMMERCIAL AND INDUSTRIAL USE FOR MIXING SOLIDS, LIQUIDS,... Class 007 Class 007 Machinery Products THE PINWHEEL DESIGN IS A FANCIFUL REPRESENTATION OF THE SWIRLING MATERIALS WITHIN A MIXER. | | | HYDRA-DREDGE Barrett Haentjens & Co. of Pittsburgh
73117075 25 Feb 1977 | on 13 Jul 2002 | Sludge Removal Dredges,Sludge Removal Dredges Class 007 Class 007 Machinery Products Sludge Removal Dredges | | | HYDRA HYDRAULIC RAKE Barrett Haentjens & Co. of Pittsburgh
73117093 25 Feb 1977 | on 02 Dec 2001 | Sludge Removal System Consisting of Piping and Actuated Control Valves... Class 007 Class 007 Machinery Products Sludge Removal System Consisting of Piping and Actuated Control Valves Submerged in a Sludge Bed Located at the Bottom of a Sedimentation Basin, this Suction Piping Network Being Connected to a Pump to Permit Drawing Off of the Settled Material | |