{"version":"1.0","type":"link","title":"Comptometer - Newikis","description":"The comptometer was the first commercially successful key-driven mechanical calculator, patented in the United States by Dorr Felt in 1887.","provider_name":"Newikis","provider_url":"https://newikis.com","cache_age":86400,"thumbnail_url":"https://upload.wikimedia.org/wikipedia/commons/3/3e/Comptometer_model_ST_Super_Totalizer.png","thumbnail_width":1223,"thumbnail_height":858}