Building structure with an elevator

Building sway control

Ceiling system

Clamping device for explosion panels

Collapse preventing connection device for building structures

Combination manhole closure assembly and separate support ring

Control of torsional deformation of elongate members

Controllable damper

Controllable insulating effects by selective interposition of in

Controlled destructive panel assembly

Controlled release wall structure

Controlled thermal expansivity structure

Decompression panel for a separation device in an aircraft

Device and method for removing ice and snow from roofs and overh

Device for removing ice from roofs

Device in a building structure

Devices for the fire stopping of plastics pipes

Dimensionally stable support structure

Double dome heat and smoke vent structure

Double walled underground storage containers for fluids such as