Ex parte WILLIAMS et al. - Page 4




          Appeal No. 96-0663                                                          
          Application No. 08/253,618                                                  


                The examiner relies on the following references:                      
          Bartlett et al. (Bartlett)    4,928,192           May  22, 1990             
                                                  (filed Dec. 23, 1987)               
          Nigam                         4,933,795           Jun. 12, 1990             
                                                  (filed Dec.  7, 1987)               
          Williams et al. (Williams)    4,969,058           Nov.  6, 1990             
                                                  (filed Nov. 10, 1988)               

                Claims 14, 17 and 18 stand rejected under 35 U.S.C. 103.              
          As evidence of obviousness, the examiner cites Nigam, Williams              
          and Bartlett.                                                               
                Claims 14, 17 and 18 stand further rejected under                     
          obviousness-type double patenting over claim 22 of Williams in              
          view of Nigam and Bartlett.                                                 
                Reference is made to the brief and answer for the                     
          respective positions of appellants and the examiner.                        


                                       OPINION                                        
                We will not sustain the rejections in this case because it            
          is clear to us that the examiner has failed to establish a prima            
          facie case with respect either to obviousness or to obviousness-            
          type double patenting.                                                      
                The instant claims are drawn to fairly detailed methods.              
          Yet the examiner has merely pointed to a few structural features            
          of Nigam, without even pointing out to which instant claimed                

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