AIR DIFFUSERS FOR VENTILATING APPARATUS; COMBINED AIR INLET AND AIR EXHAUST UNITS FOR VENTILATING APPARATUS; AIR OUTLET UNITS FOR VENTILATING APPARATUS HAVING LIGHT FIXTURES COMBINED THEREWITH; HIGH VELOCITY AIR DISTRIBUTING UNITS; NOZZLES; VALVES CONTROLLING FLOW OF AIR TO SUCH UNITS AND LINKAGES FOR CONTROLLING SUCH VALVES; AIR FLOW VOLUME AND DIRECTIONAL CONTROL ELEMENTS AS DAMPERS, VANES, BAFFLES, AND DEFLECTORS; AIR DUCTS AND FITTINGS THEREFOR; MOUNTINGS FOR ELEMENTS AND ACCESSORIES OF A...

INSTRUMENT FOR MEASURING THE TEMPERATURE, VELOCITY, AND OTHER CONDITIONS OF AIR AND GASES