2004-10-30/2019-11-09 - From the OHS PC Database, derived from A Guide to North American Organbuilders, by David H. Fox (Richmond, Va.: Organ Historical Society, 1991). — Patent awarded to Levi M. Rinker, Pittsburgh, Pennsylvania,1926. Patent #1,570,780; January 26, 1926; organ structure. Source: Information taken from the text of the United States patent listed above.
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