Ex parte SMITH - Page 4
          Appeal No. 1997-3276                                       Page 4           
          Application No. 08/478,567                                                  
          Ishizu et al. (Ishizu)             4,822,751           Apr. 18,             
          1989                                                                        
          Noto et al. (Noto)                 4,885,580           Dec.  5,             
          1989                                                                        
          Iggulden                           4,933,968           Jun. 12,             
          1990                                                                        
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