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Clarence Hansell : ウィキペディア英語版 | Clarence Hansell Clarence Weston Hansell (January 20, 1898 – ) was an American research engineer who pioneered investigation into the biological effects of ion air. He was granted over 300 US patents, including, in the 1930s, a precursor to the modern ink jet printer that could print 750 words a minute, its data received via radio telegraph. Only Thomas Edison held more patents. ==Life and education== Hansell was born in Medaryville, Indiana on January 20, 1898. He graduated from Purdue University with a Bachelor of Science degree in electrical engineering in 1919. He was awarded an honorary Doctorate of Electrical Engineering in 1952.
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