Ex parte ALMULLA - Page 3

          Appeal No. 1998-0692                                                        
          Application No. 08/693,551                                                  

          portion of the component operated at a second higher voltage                
          thereby decreasing the propagation delay through the signal                 
          paths; and                                                                  
               switches coupling certain signal paths from the first                  
          portion and second portion of the component which propagate                 
          the signal between the first voltage signal paths and higher                
          second voltage signal paths.                                                

               The examiner relies on the following reference:                        
          Gregor                   5,084,637                Jan. 28, 1992             
               Claims 4, 7 through 9, 12 and 13 stand rejected under 35               
          U.S.C.  102(b) as anticipated by Gregor.  Claims 5, 6, 10 and              
          11 stand rejected under 35 U.S.C.  103 as unpatentable over                
               Reference is made to the briefs and answer for the                     
          respective positions of appellant and the examiner.                         
               We reverse.                                                            
               The examiner identifies, in Gregor, a first voltage                    
          supply source, V , a second voltage supply source, V , aDDL                               DDH                      
          first circuit portion, 22 and 23, and a second circuit                      
          portion, 19 and 20, as well as a signal level switch, 10.                   
          Independent claim 4 requires that signal paths include                      
          “critical signal paths” through which signals must propagate                

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