2004-10-30/2019-10-28 - From the OHS PC Database, derived from A Guide to North American Organbuilders, by David H. Fox (Richmond, Va.: Organ Historical Society, 1991). — Representative of the Möller firm of Hagerstown, Maryland, in Chicago, Illinois, 1917. Patent #1,285,396; November 19, 1918; pneumatic action. Sources: The Diapason April 1917, 10. [Information taken from the text of the United States patent listed above.]
2015-10-14/2019-02-05 - See main entry: M.P. Möller, Inc.
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