2004-10-30/2019-09-03 - From the OHS PC Database, derived from A Guide to North American Organbuilders, rev. ed., by David H. Fox (Organ Historical Society, 1997). — Patent awarded to August W. Flegel, Cranford, New Jersey, 1907. Patent #850,635; April 16, 1907; pneumatic action. Source: Information taken from the text of a United States patent.
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