Patented May 1, 1877
If an object in your hands says PAT. MAY 1, 1877, it may be one of these.
| Patent | Title | Inventor | Of |
|---|---|---|---|
| US 190,130 | IMPROVEMENT IN FOUNTAIN-PENS | Alonzo T. Cross | Providence, Rhode Island |
| US 190,266 | IMPROVEMENT IN FOUNTAIN-PENS | Henri Berlie and François X. Lamboley | New York, New York |