Keen-O-PhoneThe 78rpm-Club2016-09-06T11:29:49+02:00September 6th, 2016|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.Share This Story, Choose Your Platform!FacebookTwitterLinkedInRedditWhatsappTumblrPinterestVkEmail