Labor monitoring device
Large clockwork with an electrically driven striking train
Lavet motor and method of assembly
Leather wrist-watch strap with folding clasp
Lever type mainspring winding device for clock
Light source with gradually changing intensity
Liquid clock
Liquid crystal display device
Liquid-crystal display device
Long pendulum clock movement
Low amplitude indexing mechanism for horological instruments
Low energy animated time piece
Low profile digital clock