Pressure relief valves for use as explosion relief valves in engines, gas compressors, and industrial equipment

BONE SUBSTITUTES FOR SURGICAL USE; ARTIFICIAL BIOMATERIALS FOR AUGMENTATION OF BONE AND TISSUE FOR MEDICAL PURPOSES; ARTIFICIAL BONE PARTS TO BE IMPLANTED IN NATURAL BONES; ARTIFICIAL BONES FOR IMPLANTATION; BONE IMPLANTS COMPOSED OF ARTIFICIAL MATERIALS; BONE PROSTHESES; BONE REPAIR COMPOUND FOR USE IN ORTHOPEDIC SURGERY; PROSTHETIC AND FILLING MATERIALS, NAMELY, ARTIFICIAL MATERIALS FOR USE IN THE REPLACEMENT OF BONES; PROSTHETIC AND FILLING MATERIALS, NAMELY, PUTTY FOR USE IN THE REPLACEME...