pall

Porous alloys and metals, namely, porous stainless steel, ferrous and nonferrous woven wire mesh sheet material, and rigidified woven wire mesh sheet material suitable for use as porous aircraft parts such as leading edges for wings and control surfaces for turbine afterburner lines. Fluid measuring, sensing and control devices, namely, fluid couplings, pressure sensitive valves, flow responsive valves, combined pressure and temperature responsive valves, flow indicators, gauges and switches; fluid pressure sensing indicators, namely, differential pressure indicators, pressure sensitive switches; temperature sensing and control elements, namely, thermocouples, thermocouple assemblies, and thermowells; test equipment, namely, bubble point test instruments, pore size determinators, filter test equipment, and ultrasonic testing and cleaning equipment and systems. Biomedical devices, namely, blood filters, medical gas filters, I.V. fluid filters, blood purification filters, syringe pumps for administering fluids to or withdrawing fluids from patients, air or gas eliminators as parts of fluid administration lines for removing air or gas therefrom, check valves as parts of syringe pumps, and blood autotransfusors. Environmental control systems, namely, gas transfer and reclamation systems and components; gas dryers, namely, desiccant and refrigerant gas dryers and components therefor, cycling control and timing devices and valves as parts of gas dryers, gas and fluid dehydrators and components therefor, valves for filters and filter assemblies, namely, coaxial valves, flow-directing valves, pressure- responsive valves; demisters for removing liquids in droplet form entrained in gases.