Ex parte UNRATH et al. - Page 9




          Appeal No. 1999-1332                                                        
          Application No. 08/591,857                                                  



          the case surrounding the filter pack.  The examiner has taken               
          the position, however, that                                                 
                    [i]t would have been obvious to someone                           
                    of ordinary skill in the art at the time                          
                    of the invention to substitute flat sheets                        
                    adhesively attached to the sides of a filter                      
                    pack as disclosed by Wasielewski et al[.]                         
                    for the frame sides molded in situ to a filter                    
                    pack as disclosed by Allen et al [sic, Allan                      
                    et al.] so that the filter pack is structurally                   

























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