- Court of Appeals for the Federal Circuit | Tuesday, October 22, 1991 | Cited 0 times
- Supreme Court of the United States | Tuesday, December 10, 1991 | Cited 0 times
- Court of Appeals for the Federal Circuit | Wednesday, September 15, 1993 | Cited 0 times
- Court of Appeals for the Federal Circuit | Monday, April 7, 2003 | Cited 0 times