Appeal No. 1998-0865 Application No. 08/488,455 piezoelectric transducer is formed on the concave side of the thin-walled region of the substrate and is curved in the same direction as the substrate. Claim 2 is illustrative of the claimed invention, and it reads as follows: 2Page: Previous 1 2 3 4 5 6 7 8 9 NextLast modified: November 3, 2007