Input (grade 12): 1891 & ndash; Almon Strowger, an undertaker in Topeka, Kansas, patents the Strowger switch, a device which led to the automation of telephone circuit switching.
Output (grade 12): 1891 - Almon Strowger, an undertaker in Topeka Kansas, patents the strowger switch, a device which led to the automation of telephone circuit switching.