Patented August 12, 1890
If an object in your hands says PAT. AUGUST 12, 1890, it may be one of these.
| Patent | Title | Inventor | Of |
|---|---|---|---|
| US 434,384 | KEY-BOARD ATTACHMENT FOR PIANOS | Casper De Vilbiss | Shellsburg, Iowa |
The Talking Machine Patent Archive
Patents you could hear
If an object in your hands says PAT. AUGUST 12, 1890, it may be one of these.
| Patent | Title | Inventor | Of |
|---|---|---|---|
| US 434,384 | KEY-BOARD ATTACHMENT FOR PIANOS | Casper De Vilbiss | Shellsburg, Iowa |