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  1.  
  2.  PraCTis, a joint effort of the U.S. Patent and Trademark                        
  3.  Office and the World Intellectual Property Organization,                        
  4.  contains bibliographic information and abstracts from Patent                    
  5.  Cooperation Treaty (PCT) published applications (1983-1989),                    
  6.  and titles for the technological divisions of the                               
  7.  International Patent Classification (IPC) Systems.                              
  8.                                                                                  
  9.                                                                                  
  10.