Patented December 20, 1892

If an object in your hands says PAT. DECEMBER 20, 1892, it may be one of these.

Patent	Title	Inventor	Of
US 488,379	PHONOGRAPH.	Gianni Bettini	New York, New York
US 488,380	PHONOGRAPH.	Gianni Bettini	New York, New York

All dates