Category:Charles Day (1879-1931)

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<nowiki>Charles Day; Charles Day; Charles Day; Charles Day; Charles Day; American electrical and construction engineer (1879-1931); Ingénieur américain en électricité et construction (1879-1931); elektrotechnisch ingenieur; Charles A. Day; Charles A. Day</nowiki>
Charles Day 
American electrical and construction engineer (1879-1931)
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Date of birth15 May 1879
Date of death10 May 1931
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Wikidata Q29952100
ISNI: 0000000084706465
VIAF ID: 112568019
GND ID: 1089109199
Library of Congress authority ID: no2010036677
IdRef ID: 157137791
Open Library ID: OL1510216A
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Charles Day (May 15, 1879 - November 5, 1931) was an American engineer, consulting engineer and lecturer. He is known as co-founder of Day & Zimmermann, and for his seminal contributions to flow charts and route charts.