Patented March 23, 1897
If an object in your hands says PAT. MARCH 23, 1897, it may be one of these.
| Patent | Title | Inventor | Of |
|---|---|---|---|
| US 579,152 | PEN. | William T. Keefer | Bedford, Indiana |
The Fountain Pen Patent Archive
The instruments that put ink under pressure
If an object in your hands says PAT. MARCH 23, 1897, it may be one of these.
| Patent | Title | Inventor | Of |
|---|---|---|---|
| US 579,152 | PEN. | William T. Keefer | Bedford, Indiana |