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). — Patent awarded to Sase Hisashi, Chiba, Japan, 1977. Patent #4,028,982; 14 Jun. 1977; pipe organ. ; Source: Information taken from the text of a United States patent.
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