|4453390||Combination lock monitoring system|
A combination lock monitoring system for recognizing and indicating electronically the condition of operation of the lock, the recognition being achieved by photo sensitive means responding to the light reflecting quality of areas on the lock bolt mechani...
An antitheft device adapted for attachment to the valve stem of an inflated vehicle tire may comprise: a plunger assembly including a plunger engageable with a valve core of the valve stem and axially movable relative thereto for forcing the valve core to...
|4059299||Auxiliary portable lock|
An auxiliary portable lock which comprises a housing, a lock body receivable within said housing, and adapted for axial rotation therein, said housing being internally communicative with a tubular casing axially normal to the longitudinal axis of said hou...