Geigy, swiss P., 474,558(1969) 怎么检索？

如题。找不到

Verfahren zur Herstellung von Farbstoffen der Dioxazinreihe   
                    
  Bibliographic data      Description      Claims      Mosaics      Original document      INPADOC legal status     
         
   

Publication number: CH474558 (A)  
Publication date: 1969-06-30  
Inventor(s): PUGIN ANDRE DR [CH]; BURDESKA KURT DR [CH]  
Applicant(s): GEIGY AG J R [CH]  
Classification:   
- international: C09B19/02; C09B19/00; (IPC1-7): C09B19/02  
- European: C09B19/02  
Application number: CH19640008496 19640629  
Priority number(s): CH19640008496 19640629; CH19630008256 19630702  
   
View INPADOC patent family   
View list of citing documents