Manually and electrically commanded automatic hooklock

Manually operated coded switch

Manually operated lock mechanism for bypass of customer operated

Manually or electrically driven lock

Master keyboard

Master-key piston lock

Master-keyed cylinder comprising tumblers and corresponding...

Master/valet keyset and lock

Maximum-security lock

Maze-type locking device

Means for locking a displaceable or rotatable part

Means for, and a method of, adjusting a cylindrical lockset for

Mechanical card lock

Mechanical code comparator

Mechanical code lock

Mechanical combination lock

Mechanical dial combination lock

Mechanical key and locking/unlocking key

Mechanical key code verification system

Mechanical lock having a variable key