Multipoint mortise lock
Multipurpose anati-theft device
Mystery box
Non-commutated linear motor
Non-handed, concealed-screw lock mounting mechanism
Non-reusable locking device and method of use
Numeral lock with changeable combinations
Obround window or door fitting
Obturator for safe deposit boxes and the like
Off-center locking handle
One part theft deterrent device
One piece security device to prevents the rotation of...
One-piece cam and bolt housing for a deadbolt assembly
Operating device
Operating mechanism
Operator catch cartride assembly for a door handleset
Optical disc security device having a magnetically actuable...
Optical key reader for door locks
Optical security system
Optical theft deterrent system