When was photocopier machine introduced by Haliod?

Options :
  1. 1951
  2. 1949
  3. 1947
  4. 1946

Answer and Explanation :-

Answer: Option 2


After consulting a professor of classical language at Ohio State University, Haloid and Carlson changed the name of the process to "xerography," which was derived from Greek words that meant "dry writing." In 1949, Xerox Corporation introduced the first xerographic copier called the Model A.

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