Metallurgical engineer Crucible Steel Company American, Midland, Pennsylvania, 1957-1966, attorney Pittsburgh, 1966-1967. Contract administrator Nuclear Materials & Equipment Corporation, Apollo, Pennsylvania, 1967-1969. Patent attorney Bausch & Lomb, Rochester, New York, 1969-1994.
Assistant general patent counsel Air Products and Chemical, Inc., Allentown, Pennsylvania, 1994-1997. Senior attorney Ratner & Prestia, Valley Forge, 1994-1997, partner Allentown, since 1997.
Member American Bar Association (committee chair Invention Committee, since 2001), American Intellectual Property Law Association (secretary 1993-1996. Committee chair Invention Issue Committee since 2001) Pennsylvania Bar Association, Federal Circuit Bar Association, Philadelphia Intellectual Property Law Association, Bar Association Lehigh County, Benjamin Franklin American Inn of Court.