U.S. federal trademark · Serial No. 72428551 · Reg. No. 0968100
INTERLOCKING SYSTEMS FOR INTERLOCKING THE WHITH LIGHTS, ENTRANCE DOORS AND FILM STORAGE BINS OF DARK-ROOMS, AND COMPONENTS OF SUCH SYSTEMS-NAMELY, LOCKING HARDWARE AND MECHANISMS AND ELECTRIC CIRCUITRY AND COMPONENTS FOR LOCKING AND UNLOCKING FILM BINS AND ENTRANCE DOORS AND FOR TURNING ON AND OFF LIGHTS IN RESPONSE TO PREDETERMINED CONDITIONS
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