SFO Museum Free Tour: "Give Me a Ring: A Telephone Retrospective"
Alexander Graham Bell patented the telephone on March 7, 1876, and established the Bell Telephone Company in 1877, despite competing innovators and patent disputes.
SFO Museum Free Tour: "Give Me a Ring: A Telephone Retrospective"
Alexander Graham Bell patented the telephone on March 7, 1876, and established the Bell Telephone Company in 1877, despite competing innovators and patent disputes.
