Keen-O-Phone The Keen-o-Phone company of Philadelphia, founded by Morris Keen, began manufacture in 1911 of a horn-in-lid type machine with mechanical feed. Keen-o-Phone ceased production in 1914. Von The 78rpm-Club|2016-09-06T11:29:49+02:00September 6th, 2016|0 Kommentare Share This Story, Choose Your Platform! FacebookTwitterRedditLinkedInWhatsAppTumblrPinterestVkE-Mail Über den Autor: The 78rpm-Club