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.
Preserving The Grooves
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.
