Treatment of materials; recycling of waste and trash; air purification and treatment of water; printing services; food and drink preservation; machining parts for others; assembly of products for others; custom assembling of materials for others; custom manufacture of molded components; custom manufacture of prototypes; custom manufacture of metal hardware; forging of metal goods to the order and specification of others; rental of equipment for the treatment and transformation of materials, f...

CHEMICAL COMPOSITIONS USEFUL AS SOLVENTS FOR CLEANING INDUSTRIAL EQUIPMENT

ALUMINOUS CEMENT, AND INGREDIENTS FOR FORMING SAME, USED CHIEFLY IN OIL WELLS