The company was founded in 1934 by Philip Rogers Mallory, and initially manufactured tungsten wire for lamp filaments and bearings.
Philip Rogers Mallory (1885-1975) was an American businessman and the founder of the company that is now known as Duracell International.
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In 1942 Samuel Ruben and Mallory developed the mercury cell which was considered a break through in battery manufacturing.
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Rather than making a career in his family's shipping business, he founded his own manufacturing company, the P. R. Mallory Company.
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