Automatic inlet control valves for reciprocating air compressors; Laboratory equipment, namely, plastic, rubber and elastomer closures, seals and stoppers for laboratory bottles; Pressure sensors; Oxygen regulators; Hyperbaric oxygen chambers for non-medical purposes; Self-rescue apparatus, namely, oxygen breathing units; Self-rescue apparatus, namely, respiratory gas containers; Pressure measurement films; Video circuit boards; Electrical transducers; Aviation oxygen masks; Safety equipment,...