(Q728601)

English

Peter Cooper Hewitt

(1861-1921) American electrical engineer who invented the first mercury-vapor lamp

Statements

Peter Cooper Hewitt.jpg
2,497 × 3,113; 1.53 MB
Peter Hewitt hållande en kvicksilverånglikriktare. (Swedish)
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Map

40°39'7.916"N, 73°59'27.949"W
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Peter Cooper Hewitt
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Identifiers

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Peter Cooper Hewitt (5 May 1861 - 25 Aug 1921)
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