{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"ORIGINAL PATENT APPLICATION NUMBER 557,903 FOR IMPROVEMENTS IN AND RELATING TO RADIO COMMUNICATION SYSTEMS FOR THE NAVIGATION OF AIRCRAFT. (LONDON AND ESSEX).","author_name":"Limited., Donald Orr Sproule and Arthur Joseph Hughes. Henry Hughes and Son","thumbnail_url":"https://www.ebooknetworking.net/books/noimage.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-B003KY6JJE.html\">ORIGINAL PATENT APPLICATION NUMBER 557,903 FOR IMPROVEMENTS IN AND RELATING TO RADIO COMMUNICATION SYSTEMS FOR THE NAVIGATION OF AIRCRAFT. (LONDON AND ESSEX).</a>","width":400,"height":300}