Filed: December 22, 1986 SPECIAL CHEMICALS FOR THE ELIMINATION OF WATER CONTAMINATION IN INDUSTRIAL AND WASTE WATER TREATMENTS Owned by:WATERCHEM Serial Number:73636395
Filed: January 23, 1987 SPECIALTY CHEMICALS TO ENHANCE COAGULATION OF IMPURITIES IN INDUSTRIAL AND WASTE WATER ENVIRONMENTS Owned by:WATERCHEM Serial Number:73640971