| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Switzerland | 12 | |
| #2 | Germany | 4 | |
| #3 | Canada | 3 |
| # | Industry | |
|---|---|---|
| #1 | Optics | |
| #2 | Measurement | |
| #3 | Packaging and shipping | |
| #4 | Machine tools | |
| #5 | Machines | |
| #6 | Consumer goods |
| # | Technology | |
|---|---|---|
| #1 | Cameras | |
| #2 | Measuring length, angles and areas | |
| #3 | Office accessories | |
| #4 | Punching metal | |
| #5 | Containers for goods storage | |
| #6 | Processing photographic materials | |
| #7 | Cleaning | |
| #8 | Shaping of plastics |
| # | Name | Total Patents |
|---|---|---|
| #1 | Arnold Perrot | 12 |
| #2 | Perrot Arnold | 7 |
| Publication | Filing date | Title |
|---|---|---|
| DE2722137A1 | Instrument to measure vehicle tyre profile depth - has measuring tappet coupled to pointer in housing and U-shaped stirrup providing braking force to prevent displacement | |
| CA685106A | Slide mounting for transparencies | |
| CA684630A | Slide mounting for transparencies | |
| CA598016A | Transparency slide |