| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 10 | |
| #2 | France | 6 | |
| #3 | United Kingdom | 6 | |
| #4 | United States | 6 | |
| #5 | Switzerland | 5 | |
| #6 | Canada | 2 | |
| #7 | Sweden | 1 |
| # | Industry | |
|---|---|---|
| #1 | Consumer goods | |
| #2 | Machines | |
| #3 | Machine tools |
| # | Technology | |
|---|---|---|
| #1 | Writing or drawing tools | |
| #2 | Unspecified technologies | |
| #3 | Metal-working |
| # | Name | Total Patents |
|---|---|---|
| #1 | Rigondaud Guy Frederic | 5 |
| #2 | Frederic Rigondaud Guy | 5 |
| #3 | Frederic Guy Rigondaud | 2 |
| #4 | Helitas Robert | 2 |
| #5 | Perraud Roger | 2 |
| #6 | Rigondaud Guy F | 1 |
| #7 | Robert Helitas Jules Victor | 1 |
| #8 | Victor Helitas Robert | 1 |
| #9 | Roger Perraud | 1 |
| #10 | Rigondaud Guy | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US3572954A | Writing device | |
| GB1212651A | Reservoir pens | |
| FR1512419A | Multi-Color Ballpoint Pen Development | |
| FR1507251A | Pen ink cartridge | |
| FR1510830A | Writer instrument | |
| FR1471266A | Stylograph cap closure device | |
| FR1471265A | Stylograph pen holder device | |
| US3361516A | Tracing implements | |
| CA822368A | Clip device for a fountain-pen cap | |
| CA867919A | Support and feeding assembly for nibs of fountain-pens |