| # | Country | Total Patents | |
|---|---|---|---|
| #1 | France | 10 | |
| #2 | Germany | 9 | |
| #3 | Italy | 8 | |
| #4 | United Kingdom | 3 | |
| #5 | Austria | 1 | |
| #6 | Switzerland | 1 | |
| #7 | Spain | 1 | |
| #8 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Consumer goods | |
| #2 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Writing or drawing tools | |
| #2 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Verona Franco | 9 |
| #2 | Franco E Verona | 1 |
| #3 | Calamassi Alberto | 1 |
| #4 | E Verona Franco | 1 |
| Publication | Filing date | Title |
|---|---|---|
| FR2250639A1 | Quasi-cylindrical fountain pen - has cap with outside elastic element with projections through wall perforations | |
| FR2251182A7 | Cylindrical form fountain pen - has ring protruding from rear of body to grip cap by friction | |
| GB1474804A | Writing instruments | |
| ES405300A1 | Perfections in devices to hold the cap of a fountain pen on the back of the body of the same. (Machine-translation by Google Translate, not legally binding) | |
| GB1355598A | Writing instruments | |
| GB754680A | Improvements in or relating to fountain pens |