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Create the page "William Joseph Hammer" on this wiki! See also the page found with your search.
- * William Leslie Edison (1878–1937) ...er [[Francis Robbins Upton]] turned out 50,000 lamps. According to Edison, Hammer was "a pioneer of incandescent electric lighting".<ref>{{cite book |title=T105 KB (15,290 words) - 17:19, 16 December 2018
