Wilmington, DE, US
Information
Patent Grant
E. I. Du Pont de Nemours and Company
Edward George Howard
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Grant
E. I. Du Pont de Nemours and Company
Thomas E. Carney
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
