73451595
Nov 7, 1983
May 14, 1985
INDUSTRIAL FLUID FLOW MEASURING DEVICES-NAMELY, ORIFICE PLATES, [ RING-TYPE ORIFICE PLATE HOLDERS, ] ORIFICE PLATE METER TUBES, FLOW TUBES, VENTURIS, FLOW NOZZLES, [ FLOW NOZZLE METER RUNS, ] STRAIGHTENING VANES AND CONDENSATE CHAMBERS
Electrical and Scientific Apparatus