| # | Country | Total Patents | |
|---|---|---|---|
| #1 | EPO (European Patent Office) | 2 | |
| #2 | United States | 2 | |
| #3 | Australia | 1 | |
| #4 | Brazil | 1 | |
| #5 | Hungary | 1 | |
| #6 | India | 1 | |
| #7 | Republic of Korea | 1 | |
| #8 | Mexico | 1 | |
| #9 | Netherlands | 1 | |
| #10 | Norway | 1 | |
| #11 | Poland | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machines | |
| #2 | Consumer goods |
| # | Technology | |
|---|---|---|
| #1 | Unspecified technologies | |
| #2 | Filing and indexing |
| # | Name | Total Patents |
|---|---|---|
| #1 | Ardenne Johanna Lamberta Maria | 5 |
| #2 | Van Ardenne Nee Van Rhijn Joha | 2 |
| #3 | Van Ardenne-Van Rhijn Johanna | 2 |
| #4 | Van Ardenne Johanna L M | 1 |
| #5 | Ardenne-Van Rhijn Van Johanna | 1 |
| #6 | Van Ardenne Johanna L M D D Va | 1 |
| Publication | Filing date | Title |
|---|---|---|
| NL9300056A | Clamp for holding and / or holding sheets of paper or other materials together. | |
| EP0525909A1 | Clip for paper or other objects |