King Camp Gillette (Portuguese Wikipedia)

Analysis of information sources in references of the Wikipedia article "King Camp Gillette" in Portuguese language version.

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archive.org

"K.C. Gillette Dead". New York Times. July 11, 1932. Made Safety Razor. His Invention Led to Output by His Company of Nearly a Billion Blades Annually. Fame Became World Wide. Wrote Books Favoring Organization of Super-Socialistic Concern to Abolish Competition's Evils. ...

Randal C. Picker, "The Razors-and-Blades Myth(s)", John M. Olin Law & Economics Working Paper No. 532, University of Chicago Law School full text PDF Archived 2011-06-10 at the Wayback Machine

Kampfe, Frederic ; Kampfe, Otto F. "Safety-razor" U.S. patent no. 228,904 (filed: May 8, 1880 ; issued: June 15, 1880).
Nickerson, William E. "Abrading machine" U.S. patent no. 793,604 (filed: 19 March 1902 ; issued: 27 June 1905).
Nickerson, William E., "Method of hardening" U.S. patent no. 812,442 (filed: 26 September 1903 ; issued: 13 February 1906).

see, e.g. Martin, Richard (2001-08-06). "The Razor's Edge". The Industry Standard. Archived from the original on 2008-06-25. Retrieved 2008-08-01.
Randal C. Picker, "The Razors-and-Blades Myth(s)", John M. Olin Law & Economics Working Paper No. 532, University of Chicago Law School full text PDF Archived 2011-06-10 at the Wayback Machine
Biography: King C. Gillette: The Man and His Wonderful Shaving Device, by Russell B. Adams, Jr. (Boston: Little, Brown & Co., 1978).
"The First Safety Razor". creekstone.net.