72144291
May 10, 1962
Mar 26, 1963
Entrainment Separators; Centrifugal Pumps and Parts Thereof; Bushings and Bearings for Machinery; Scrubber, Absorption, Fractionating and Stripper Towers and Columns, and Trays, Bubble Caps, and Baffles Therefor
Yarns and Threads