Francis A Pratt, American mechanical engineer, late 19th century.
4 0 c m
 
30cm
actual image size: 22cm x 32cm

Francis A Pratt, American mechanical engineer, late 19th century.

© Science Museum / Science & Society Picture Library

Description

Francis A Pratt (1827-1902) founded the Pratt and Whitney manufacturing company with Amos Whitney in 1860. Having suppiled arms for the American Civil War, Pratt and Whitney patented the first coin-operated telephone in 1889.
 

Image Ref.

10305595
 

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