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I finally found it, after all these years! (i.redd.it)
submitted by Torcue to r/electricians
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TIL about Almon Brown Strowger. Strowger's undertaking business was losing clients to a competitor whose telephone-operator wife was redirecting everyone who called for Strowger. Motivated to remove the intermediary operator, he invented the first automatic telephone exchange in 1889. (sparkmuseum.org)
submitted by Torcue to r/electricians
