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 Carl J. Landin, Boston, Massachusetts, 1906. Patent #824,079; 19 Jun. 1906; electric action. Source: Information taken from the text of a United States patent.
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