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 Joseph Galleazzi, San Francisco, California, 1915. Patent #1,133,555; 30 Mar. 1915; coupler. Source: Information taken from the text of a United States patent.
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