One of my favorite tweets of the day was McIntosh Labs celebration of the 138th anniversary of Thomas Edison’s patent of the phonograph. Here at the PoorAudiophile, we’ve long been admirers of McIntosh and salivated over the MT10 and the MT5 (pictured in the tweet below).
Without coming across as snarky, August 12th is unfortunately not the anniversary date of the patent. Rather, the phonograph appears to have been patented on February 19, 1878 as US Patent 200,521. Looking around to see if perhaps I missed something, I came across this great page over at Rutgers that has a running catalog of every patent since 200,521 pertaining to the phonograph.