Ex parte SINGH et al. - Page 15




          Appeal No. 1999-2131                                      Page 15           
          Application No. 08/971,504                                                  


          do not understand why the examiner's rejection combines Drake               
          and Du Mond when the examiner's explanation appears to suggest              
          that the claimed subject matter is taught by Drake alone.  It               
          is our opinion that the examiner has not explained what there               
          is in Drake or Du Mond that is suggestive of their combination              
          so as to yield the subject matter of claims 25-40, 49-58 and                
          65-74.  Therefore, we will not sustain the examiner's                       
          rejection of claims 25-40, 49-58 and 65-74 over Drake in view               
          of Du Mond.                                                                 
               For the above reasons, it is our opinion that the                      
          examiner has failed procedurally to establish a prima facie                 
          case of obviousness, and we will not sustain the examiner's                 
          obviousness rejection of claims 1 through 74 on this ground.                


                               REMAND TO THE EXAMINER                                 
               We remand this application, pursuant to 37 CFR §                       
          1.196(e), to the examiner to consider whether any of claims 1               
          through 74 should be rejected in view of the following                      
          considerations.                                                             
                                                                                      
          (1984)).                                                                    








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