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A: ( 39.9526,-75.1652)

Eckert & Mauchly Invent the Mercury Acoustic-Delay-Line Memory, the first Reliable Computer Memory System

10/31/1947 to 1953

On October 31, 1947 Eckert and Mauchly applied for a U.S. patent on the mercury acoustic delay-line electronic memory system. This was the "first device to gain widespread acceptance as a reliable computer memory system." (Hook & Norman, Origins of Cyberspace [2002]1191).  The patent 2,629,827 was granted in 1953.

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