2004-10-30/2019-10-13 - 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 Homer B. Hulbert, Springfield, Massachusetts, 1920. Patent #1,333,715; March 16, 1920; pipe organ. Source: Information taken from the text of the United States patent.
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