| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Austria | 4 | |
| #2 | Canada | 2 | |
| #3 | Switzerland | 2 | |
| #4 | France | 2 | |
| #5 | Belgium | 1 | |
| #6 | United Kingdom | 1 | |
| #7 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Consumer goods | |
| #2 | Basic materials chemistry | |
| #3 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Writing or drawing tools | |
| #2 | Coating compositions | |
| #3 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Roger Perraud | 2 |
| #2 | Victor Jules Helitas Robert | 1 |
| #3 | Perraud Roger F | 1 |
| #4 | Helitas Jules V R | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB863233A | Improvements in and relating to a fountain pen | |
| US2956548A | Fountain pen | |
| CA695148A | Fountain pen cap fastening clip | |
| CA693408A | Fountain pen filler |