Magnetic locks
Magnetic means for locking, surveillance and control, in...
Magnetic shear locking methods and apparatus
Magnetic-electronic system for opening and closing locks
Magnetically actuable locking mechanism and associated...
Magnetically actuated locking mechanism
Magnetically operated blocking and controlling device
Magnetically operated locking mechanism
Magnetically operated mechanism and magnetic card
Magnetically operated switch lock and key therefor
Magnetically releasable electronic article surveillance tag
Magnetically releasable electronic article surveillance tag
Mail box lock protector
Mailbox locks, mailbox locking systems, and locking mailboxes
Manipulation assistance device and method
Manipulation proof combination lock
Manual control device for opening a vehicle door
Maximum security lock bolt
Maximum-security lock
Means and apparatus for collegial identification of persons...