2004-10-30/2019-09-03 - From the OHS PC Database, derived from A Guide to North American Organbuilders, rev. ed., by David H. Fox (Organ Historical Society, 1997). - With Aeolian firm of Garwood, New Jersey, consulting engineer; with U.S. Government; with General Electric; with RCA; with Westinghouse; inventor in Gloucester, Massachusetts. Not to be confused with Laurens Hammond, inventor of the electronic organ. Patents held: Patent #1,621,879; March 22, 1927; organ pipe. Patent #1,641,166; September 6, 1927; electropneumatic swell. Patent #1,664,552; April 3, 1928; pedal control. Patent #1,664,554; April 3, 1928; piano effect device. Patent #1,670,353; May 22, 1928; sliding support for manuals. Patent #1,680,039; August 7, 1928; pipe organ. Patent #1,680,041; August 7, 1928; automatic music control. Patent #1,690,577; November 6, 1928; organ. Patent #1,693,751; December 4, 1928; swell. Patent #1,693,752; December 4, 1928; organ control. Patent #1,702,773; February 19, 1929; organ. Patent #1,722,977; July 30, 1929; harmonic organ. Patent #1,722,982; July 30, 1929; organ pipe. Patent #1,814,472; July 14 1931; organ control. Sources: The Diapason: March 1926, 1. The Diapason: April 1942, 2 .
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