Reversible-flat key for a cylinder lock

Reversing mechanism for an automatic door opener

Revolving cylinder locks

Revolving door lock

Revolving door locking apparatus

Revolving door operating and speed control mechanism

Revolving door operating mechanism and speed controller

Revolving door with security locking mechanism

Revolving pay plate for banks and ticket offices

Rigid container

Rising hinge

Rocker latch overhead door holder assembly

Rocking-swinging window

Rod and case assembly and panic exit device

Roll top door with integrated latch

Roller and hanger assembly for by-pass doors

Roller assembly

Roller assembly for a sliding frame closure

Roller assembly for sliding door

Roller blinds