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 (Richmond, Va.: Organ Historical Society, 1997). - St. Louis, Missouri. 1968. With Vernon F. Braun: Patent #3,386,326; June 4, 1968; combination action. [In the patent document, Campbell-s full name is Richard H. Campbell Jr., and his location is Gilford, New Hampshire; Vernon F. Braun-s location is St. Louis, Missouri.-Ed. Source: Patent document at the U.S. Patent Office website, http://pdfpiw.uspto.gov/.piw?PageNum=0&docid=03386326&IDKey=09F74CD0D5E7%0A&HomeUrl=http%3A%2F%2Fpatft.uspto.gov%2Fnetahtml%2FPTO%2Fpatimg.htm.] Source: Information taken from the text of a United States patent.
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