Control device for use in a lock

Control device without counterweight at a crossroads or...

Control for a door closer having a power-assist opening feature

Control for a double-acting door

Control gate assembly

Control key extension adapter

Control mechanisms suitable for actuating power operated locks

Control of the movement of a sliding or swinging and sliding...

Control roller mechanism-activator

Control structure for vending machine

Control switching for automatic load operators

Control system for automatic doors

Control system for illumination lamp installed in buildings...

Control system for revolving door

Controlled release door holder

Controlled release door system

Controlled torque drive for a barrier operator

Controller for a door operator

Controller switch assembly

Convenient automatic closing system for doors