| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Netherlands | 18 | |
| #2 | France | 10 | |
| #3 | Austria | 1 | |
| #4 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Measurement | |
| #2 | Machines | |
| #3 | Computer technology | |
| #4 | Electrical machinery and energy | |
| #5 | Telecommunications | |
| #6 | Mechanical elements | |
| #7 | Furniture and games |
| # | Name | Total Patents |
|---|---|---|
| #1 | Wirth Armin | 5 |
| #2 | Wirth Johannes | 3 |
| #3 | Wirth Walter | 1 |
| #4 | Wirth Leon J | 1 |
| #5 | Gallo Mario | 1 |
| #6 | Guhl Jay R | 1 |
| Publication | Filing date | Title |
|---|---|---|
| NL7508904A | Device for measuring mass and force. | |
| US3327869A | Collating rack |