PASTEURAY
ELECTRIC LAMPS EMITTING ULTRAVIOLET RAYS IN THE ZONE LETHAL TO FOOD DELETERIOUS BACTERIA, AND UNITARY COMBINATION STERILIZING AND ADVERTISING EQUIPMENT COMPRISING ELECTRIC LAMPS, EMITTING ULTRAVIOLET RAYS IN THE ZONE LETHAL TO FOOD DELETERIOUS BACTERIA, AND ADVERTISING MEDIA IN THE NATURE OF FLUORESCENT SUBSTANCES ACTIVATED BY SUCH RAYS OF SUCH LAMPS
Expired · May 3, 1945 · 71482913 ·