1 www.urenio.org/tools/en/Product_Life_Cycle_Management

2 Roger Smith, ed. Inventions and Inventors (Salem Press, Inc., 2002).

3 Jed Margolin, The Road to the Transistor, Copyright 1993, 2001, 2004, www.jmargolin.com/history/trans.htm.

4 Annual Reports of the War Department for the fiscal year ended June 30, 1919, Report of George O. Squier, Major General, Chief Signal Officer of the Army, October 15, 1919, p. 1145-48, http://earlyradiohistory.us/1919war.htm.

5 Lisa Mirabile, ed., International Directory of Company Histories, Vol. II, (Chicago and London: St. James Press, 1990).

6 19th Annual Report, Radio Corporation of America, December 31, 1938.

7 Time magazine, July 12, 1948.

8 Television History - The First 75 Years, www.tvhistory.tv/Annual_TV_Sales_39-59.jpg. ...

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