Original Patent - Ludwig Heppner in Borna i. Sachsen , 1881 , bruchsichere Wasserstandsgläser , Dampfkessel !!!

Original Patent - Ludwig Heppner In Borna I. Sachsen , 1881 , Bruchsichere Wasserstandsgläser , Dampfkessel !!! - Borna
Original Patent - Ludwig Heppner In Borna I. Sachsen , 1881 , Bruchsichere Wasserstandsgläser , Dampfkessel !!! - Borna
Place your mouse over the image to zoom Click to zoom Click to start the video

Join the collectors community

Register Login