73121008
Mar 31, 1977
Sep 8, 1981
Motorized Machinery for Mixing and Dissolving Powders in Liquids and for Continuous, Proportioned Dispersing Thereof in Precise Dispersion Concentrations which Are Operator Selectable
MachineryElectrical Controllers for Mixing Machinery and Instruments for Monitoring Dispersion Concentrations Produced by Mixing Machinery
Electrical and Scientific Apparatus