2004-10-30/2019-02-11 - 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 Frederick Knapp, Brooklyn, New York, jointly with Charles I. D. Looff, 1904. Patent #760,884; 24 May 1904; mechanically actuated organ. Source: Information taken from the text of a United States patent.
Regrettably, it is not possible to display the information about the sponsor of this pipeorgandatabase entry or if there is a sponsor. Please see About Sponsors on Pipe Organ Database.