73107712
Nov 26, 1976
Apr 1, 1980
HYDRAULIC CONTROLLERS, HYDRAULIC CONTROL SYSTEMS FOR IRRIGATION SPRINKLER SYSTEMS-NAMELY, HYDRAULIC CONTROLLERS, HYDRAULIC VALVES AND COUPLING VALVES; ELECTRICALLY CONTROLLED VALVES AND ELECTRICAL CONTROL SYSTEMS FOR IRRIGATION SPRINKLER SYSTEMS-NAMELY, ELECTRICAL CONTROLLERS, ELECTRICAL VALVES AND COUPLING VALVES
Electrical and Scientific Apparatus