Apparatus for a fire-rated duct

Apparatus for and method of denitrifying a solution

Apparatus for applying fire-fighting chemicals

Apparatus for blocking a medium flow passage in a spray...

Apparatus for both venting smoke and blocking fire

Apparatus for controlling or assisting respiration

Apparatus for decontaminating pcb-contaminated dielectric...

Apparatus for descending a rope

Apparatus for dispersing volatile materials into the...

Apparatus for escaping area of accident

Apparatus for exterior evacuation from buildings

Apparatus for fire control

Apparatus for generating foam

Apparatus for heating breathing gas for divers

Apparatus for impulse fire extinguishing

Apparatus for lowering articles from a building

Apparatus for oxygenating a patient

Apparatus for protecting workmen from dust

Apparatus for releasing a fluid to the atmosphere

Apparatus for relieving the pressure generated by an explosion