In the 37th year of the Meiji Period, an article appeared in the Tokyo Asahi Shimbun saying that Takeda Fusazo of Takeda & Co. in Kanda "invented a telephone sterilizer after many years of hard work." For some reason, it was invented to "prevent the spread of dreadful germs of pulmonary tuberculosis from the mouthpiece." This invention is a "nice-looking device for injecting sterilizing vapor by opening a lid."

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