2004-10-30/2019-04-29 - 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 Robert Quigley, North Tonawanda, New York, 1969; jointly with Howard M. Thomas: Patent #3,420,131; January 7,1969; electronic combination. Source: Information taken from the text of a United States patent.
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