Pipe Organ Database

a project of the organ historical society

George T. Kirkwood View Extant Instruments View Instruments


Hillsboro, Oregon, 1977.
Classification: Undetermined

Update This Entry
October 30, 2004:

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 George T. Kirkwood, Hillsboro, Oregon, jointly with John T. Whitney and Patrick M. Castle, 1977.

  • Patent #4,023,457; 17 May 1977; switching system.


  • Information taken from the text of a United States patent.

We received the most recent update for this note from Database Manager on April 29, 2019.

Database Specs:

  • 0 Organs
  • 0 Divisions
  • 0 Consoles

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