Damper
Damper blade construction
Damper blade seal
Damper operator for use with air, smoke and fire dampers
Damper operator for use with air, smoke and fire dampers
Damper seal apparatus
Demand responsive flow controller
Detonator assembly
Developer recycler in connection with photo processing machine
Developing machine for radiation-sensitive material
Device and method for controlling a liquid flow
Device for controlling a liquid flow in a conduit system
Device for controlling fluid flow
Device for controlling the flow in a pipe system
Device for introducing a substance, particularly a pulverulent s
Device for mixing flowable material such as adhesive with partic
Device for preventing the observing objective lens window of an
Device for relocating fuel elements and control rods in a core r
Device for simultaneous modulation and amplification of low freq
Device for stopping fluid flow from a pipe