2004-10-30/2019-04-29 - Note from the OHS PC Database, derived from A Guide to North American Organbuilders, by David H. Fox (Richmond, Va., Organ Historical Society, 1991). Edited for the revised OHS Online Database website, 2017. - Pescadero, California, Patent #412,454; October 8, 1889; coupling keyboard Sources: Information taken from the text of a United States patent.
2024-01-11/2024-01-11 - It's very likely that this is the inventor CARL BLOMQUIST (PESCADERO, CALIFORNIA) from patent US412454A of 1889. -Galipienso
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