Egon Walzer und Patent - Info zur Person

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Official Gazette of the United States Patent and Trademark Office:...

books.google.cz

... Gründau , and Egon Walzer , Maintal , both of E. I. du Pont de Nemours and Company . , Wilmington , Del . Germany , assignors to Degussa AG , Frankfurt am ...

US Patent for Method for reducing harmful organisms in currents of...

patents.justia.com

Inventors: Roland Schneider (Hasselroth), Egon Walzer (Maintal), Norbert Steiner (Alzenau) Primary Examiner: Peter A. Hruskoci Attorney ...

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Egon Walzer und Patent Person-Info

Official Gazette of the United States Patent and Trademark Office:...

US Patent for Method for reducing harmful organisms in currents of...