Technology

Year

   0105
     Invention Paper
   1041
     Invention Printing Type
   1086
     Invention Compass

Biographies

   Kua, Shen
     Invention Compass
   Lun, Cai
     Invention Paper
   Lun, Tsai
     Invention Paper
   Sheng, Pi
     Invention Printing Type

Places

Events

  Invention Compass
  Invention Paper
  Invention Printing Type