From the OHS PC Database, derived from A Guide to North American Organbuilders, rev. ed., by David H. Fox (Organ Historical Society, 1997). -

Patents awarded to George W. Graves with Carl Fogelberg, Cambridgeport, Massachusetts, 1881-1882.

• Patent #237,378; 8 Feb. 1881; organ bellows.


• Patent #258,908; 6 Jun. 1882; organ.

Source:

• Information taken from the texts of two United States patents.


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