Structure of key and lock barrel for lock set

Super grip fabric lock

Switch cabinet door lock

Switch lock

Switch lock with two momentary positions

Switchlock assembly with snap-in cam

Symmetrical side bar lock and key therefor

System and apparatus for opening cylinder locks

System consisting of a noncopyable key and a closed cylinder for

System for controlling the use of a plurality of items

System for obstructing movement of lock pins

System for ornamenting a key

System for the increase of the number of differing locking possi

System of interconnected lock-cylinders

System of locking

System of non-reproducible locking key and cylinder for said key