Patent-Protected High Security Lock Manufacturers: Mul-T-Lock Interactive, Medeco m3, Schlage Primus XP, Scorpion CX5, Abloy Protec, Arrow Pointe Flex, ASSA Twin Maximum, Corbin Russwin Pyramid, Marks USA Hi-Security, Sargent Keso, Yale Keymark
Lock, Knob, Lever, Panic Bar, Push Bar, Exit Device, Exit Alarm, Door Closer and Hardware Manufacturers: ABH, Adams Rite, Alarm Lock, Architectural Builders Hardware, Arrow, CCL, Corbin Cabinet Locks, CompX, Corbin Russwin, Detex, Dor-O-Matic, Falcon, Glynn-Johnson, Hager, Ives, Jackson, K2 Commercial, Kaba Simplex, LCN, Lewis C Norton, Marks, Monarch, Norton, Pemko, Olympus, PDQ, Rockwood, Sargent, Segal, Von Duprin, Yale