#FlashbackFriday During WW1 Edgar Duerr invented and patented a collapsible pocket periscope for use by soldiers in the trench warfare.
Read moreLooking forward to spending some quality time with the kids during the summer holidays, but not sure how you’re going
Read moreEdgar Duerr, former Chairman of Duerr’s once made the local papers as a “A Motor Car Terror” when he was
Read more