Electronic Flash Apparatus for Use in Photography, Particularly Extension Units

Decorative grills made of non-metal non-combustible materials for use in decorating evacuation ducts, air inlets, and hot air outlets of fireplaces; Drying apparatus for use in heating, ventilation systems, air conditioning systems and refrigeration systems; Fans for air conditioning apparatus; Fans for HVAC units; Fireplace louvers, blowers, and dampers, and ash pans for fireplaces; Lighting fixtures; Ventilating exhaust fans; Ventilating exhaust fans for household use, gymnasiums, pet house...