Latchable retainer for keys and the like
Light signal for door knob and lock assembly
Lighted magnifying key chain
Lock and cover device
Lock case having adjustable front
Lock combination decoder
Lock condition indicator device
Lock cover device
Lock cover mechanism
Lock cover mechanism
Lock cylinder cover with key engagement release
Lock cylinder cover with key engagement release of hold-open det
Lock cylinder cover with time delay closure
Lock cylinder with a pivotable closure
Lock cylinder with variable keyway profile
Lock de-icer
Lock decoder
Lock having integral status indicators
Lock position indicator
Lock reminder system