No. 90-1184. October 9, 1990. James C. Wray, McLean, Va., argued for appellant. Muriel E. Crawford, Asst. Sol., Office of the Sol., Arlington, Va., argued for appellee. With her on the brief was Fred E. McKelvey, Sol. Appeal from the Board of Patent Appeals and Inferences. Before MAYER and LOURIE, Circuit Judges, and MILLER, Senior Circuit Judge. LOURIE, Circuit Judge. This appeal is from the November 2, 1989, decision of the United States Patent and Trademark Office Board of Patent Appeals and Interferences