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). - Alfred Ahlfors, Eslof, Sweden, 1899. Patent #624,721; 9 May 1899; melody reinforcement. Source: Information taken from the text of a United States patent.
2016-03-06/2019-02-11 - From the OHS PC Database Builders Listing Editor, Mar 6, 2016 - Alfred Ahlfors (1870-1944) of Eslof, Sweden applied for a U.S. Patent in 1899. The patent was for a method of making the melody more prominent when playing on a reed organ by muting the second reed for all but the melody note. The patent abstract does not give enough detail to determine how the player indicated which was the melody note. Patent #624,721; 9 May 1899; melody reinforcement. Source: Patent Abstract available on-line at Google Patents - US 624721
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