Habitable combustion-suppressant atmosphere
Half-face mask assembly
Halogen substituted alcane composition as extinguishing agent
Halogen-free fire retardant compositions
Handling claw
Hard hat, especially for use with a breathing mask
Harness
Harness and seat board repelling system
Harness for a man carrying parachute including a mechanism...
Harness for a safety line
Harness for securing an object to a support and a method of...
Harness restraint system
Harness webbing protection system
Harness with adjustable means for supporting a tool belt
Harnesses for linesmen
Hazard detection and suppression apparatus
Hazardous waste incinerator using cyclotron resonance plasma
Head assembly
Head covering assembly with face and visor seals
Head harness for a respiratory mask