Ex parte VAN ENGELSHOVEN et al. - Page 3




          Appeal No. 1998-0335                                                        
          Application 08/518,061                                                      




          The disclosed invention pertains to the field of                            
          picture display devices.  An electron gun for generating at                 
          least one electron beam has a main lens system which is made                
          up of a first electrode, a last electrode and at least one                  
          intermediate electrode.  The intermediate electrode comprises               
          a plurality of substantially identical plates.                              
          Representative claim 7 is reproduced as follows:                            
               7.  A picture display device comprising an envelope                    
          containing an luminescent display screen and an electron gun                
          for producing at least one electron beam for deflection across              
          the display screen, said electron gun comprising a main lens                
          system having a first electrode, a second electrode, and at                 
          least one intermediate electrode disposed between said first                
          and second electrodes, each of said electrodes having at least              
          one aperture for passing the at least one electron beam, said               
          at least one intermediate electrode comprising substantially                
          identical, conductive first and second plates and means for                 
          conductively attaching said plates to each other with the at                
          least one aperture in the first plate aligned with the at                   
          least one aperture in the second plate.                                     
          The examiner relies on the following references:                            
          Shimoma et al. (Shimoma)      4,935,663        June 19, 1990                
          Matsuda                       JP 61-8832       Jan. 16, 1986                
          (abstract only)                                                             
          Claims 7-11 stand rejected under 35 U.S.C.  103.  As                       
          evidence of obviousness the examiner offers Shimoma in view of              

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