72327450
May 16, 1969
Feb 2, 1971
PNEUMATIC PUMPS AND PARTS THEREOF FOR USE IN LOADING BARGES AND SHIPS; WATER SEWAGE TREATMENT PLANTS; PNEUMATIC CONVEYING SYSTEMS FOR CONVEYING BULK MATERIALS; MOTION SAFETY SWITCH FOR BELT, CHAIN AND SCREW CONVEYORS; ROTARY AIR COMPRESSORS FOR USE IN THE PULP AND PAPER INDUSTRY; PNEUMATIC BLOWERS AND VACUUM PUMPS FOR USE IN THE PULP AND PAPER INDUSTRY; GRAVITY BLENDERS FOR MIXING DRY SOLIDS; MECHANICAL AIR SEPARATORS FOR ADJUSTING CEMENT FINENESS; ROCK AND MINERAL CRUSHERS
Yarns and ThreadsPORTABLE AIR FILTERS FOR USE WITH RAILWAY CAR UNLOADERS; PACKAGE WATER PURIFICATION TREATMENT PLANTS
Natural Agricultural ProductsINDUSTRIAL FANS AND BLOWERS; ROTARY KILNS AND PARTS THEREFOR; GRATE COOLERS DESIGNED TO RECEIVE NODULES AND PELLETS FOR A KILN OR A FURNACE AFFECTING RAPID COOLING WITH EFFECTIVE HEATING RECOUPERATION; FLUIDIZED HEAT EXCHANGER FOR USE IN THE CEMENT INDUSTRY; FLUID BED REACTORS AND DRYING AND COOLING MATERIALS FOR INDUSTRIAL USE
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