Openable roof or wall

Openable screen element such as a door

Openhole perforating

Opening and closing apparatus

Opening and secure-closing system for doors

Opening and shutting mechanism for a window

Opening device for an extension rod drilling equipment

Opening device for drill rods for an extension rod drilling...

Opening portion periphery decorative member, opening portion...

Opening protection

Opening-and-closing member control device

Opening/closing device

Opening/closing device

Opening/closing device of a door member

Openwork screen assembly

Operable glass block window

Operable wall deployment and storage system

Operably aligned and clamped earth boring machine

Operating and mounting system for a window covering

Operating and speed control mechanism for revolving doors