Lorrain - Fans for ventilation, British Patent 20307 of 1889

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Title
Lorrain - Fans for ventilation, British Patent 20307 of 1889
Publication year listed
1889
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Public domain eBook
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Lorrain - Fans for ventilation, British Patent 20307 of 1889

Author: J. G. Lorrain

Year: 1889

Fans for ventilation or for propelling or displacing air or gases, British Patent 20307 of 1889, J. G. Lorrain, December 17, 1889.

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