Ex parte CAREY et al. - Page 3




         Appeal No. 1997-3868                                      Page 3          
         Application No. 08/538,838                                                


         Staats                            4,056,422           Nov. 01,            
         1977                                                                      
         Kasper et al. (Kasper)            4,759,816           Jul. 26,            
         1988                                                                      
         Nath et al. (Nath)                5,238,519           Aug. 24,            
         1993                                                                      
         Watkin                            2,042,802      Sep. 24, 1980            
         (Published British patent application)                                    



































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