Keywords: Opfindelsernes bog5 fig223.png da Opfindelsernes Bog V 1880 af André Lütken Fig 223 ”227 Siemens' Glasdigler <br> en Opfindelsernes Bog V Book of inventions V 1880 by André Lütken Ill 223-227 From the book Opfindelsernes Bog 1878 by André Lütken 2007-04-24 Morten Bisgaard Author died more than 70 years ago - public domain PD-old Opfindelsernes Bog V |