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Hydroclone for Simultaneously Separating Immiscible Heavier Liquids and Solids from a Liquid Medium
(U.S. Patent and Trademark Office, 1973-12-04)
A hydroclone for simultaneously separating immiscible heavier liquids from a lighter liquid medium and solids from the lighter liquid including a cylindrical portion having an inlet tangentially intersecting the interior ...
Field Modulated Alternator System and Control Therefor
(U.S. Patent and Trademark Office, 1973-04-10)
A polyphase alternator of basic frequency F.sub.2 with a field circuit excited with alternating current of frequency F.sub.1, and including full wave rectifier means across each phase of the alternator, all connected in ...
Dispersed Growth Biological Sewage Treatment Process
(U.S. Patent and Trademark Office, 1973-10-30)
A dispersed growth biological secondary sewage treatment process for removing dissolved organic material and suspended solid material from sewage including metabolizing the dispersed biological solids to yield new cell ...