Joseph Zimmermann (1912 – March 31, 2004) was an engineer, born in

Kenosha, Wisconsin Kenosha () is a city in Kenosha County, Wisconsin, United States, and its county seat. It is the List of cities in Wisconsin, fourth-most populous city in Wisconsin, with a population of 99,986 at the 2020 United States census, 2020 census. S ...

who invented the first

answering machine An answering machine, answerphone, or message machine, also known as telephone messaging machine (or TAM) in the United Kingdom, UK and some Commonwealth countries, ansaphone or ansafone (from a trade name), or telephone answering device (TAD), ...

, called the "Electronic Secretary". Zimmermann graduated from Marquette University in 1935 with a degree in

electrical engineering Electrical engineering is an engineering discipline concerned with the study, design, and application of equipment, devices, and systems that use electricity, electronics, and electromagnetism. It emerged as an identifiable occupation in the l ...

.Douglas Martin.
Joseph J. Zimmermann Jr., 92, an Inventor, Is Dead
, ''The New York Times'', April 11, 2004. He served in the U.S. Army Signal Corps during

World War II World War II or the Second World War (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the wo ...

and was among the first soldiers to land on

Omaha Beach Omaha Beach was one of five beach landing sectors of the amphibious assault component of Operation Overlord during the Second World War. On June 6, 1944, the Allies of World War II, Allies invaded German military administration in occupied Fra ...

in Normandy, France, as part of the

D-Day The Normandy landings were the landing operations and associated airborne operations on 6 June 1944 of the Allied invasion of Normandy in Operation Overlord during the Second World War. Codenamed Operation Neptune and often referred to as ...

invasion. In addition to the patent on the telephone answering machine (1948), Zimmermann held dozens of other patents, including a security device that automatically dials a phone number and conveys information in case of an emergency; a magnetic recorder used to monitor heart patients; a system for accessing prerecorded lectures to earn college credit; an airport system to send out landing information to planes 24 hours a day. Zimmermann and his wife, Helen, had a son, Joseph.

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ETC history
1912 births 2004 deaths People from Kenosha, Wisconsin Engineers from Wisconsin 20th-century American engineers 20th-century American inventors United States Army personnel of World War II {{US-inventor-stub