2004-10-30/2020-04-09 - From the OHS PC Database, derived from A Guide to North American Organbuilders, rev. ed., by David H. Fox (Organ Historical Society, 1997). — Patents awarded to H. Hugh Swanton, Philadelphia, Philadelphia, Pennsylvania 1903–1913. Patent #729,238; 26 May 1903; liquid engine for blower. Patent #1,058,491; 8 Apr. 1913; blower. Source: Information taken from the text of one or more United States patents.
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