| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Switzerland | 12 | |
| #2 | United Kingdom | 3 | |
| #3 | United States | 2 |
| # | Industry | |
|---|---|---|
| #1 | Measurement | |
| #2 | Mechanical elements | |
| #3 | Consumer goods |
| # | Technology | |
|---|---|---|
| #1 | Measuring length, angles and areas | |
| #2 | Nails | |
| #3 | Goods for writing upon |
| # | Name | Total Patents |
|---|---|---|
| #1 | Roch Pierre | 10 |
| #2 | Pierre Roch | 7 |
| #3 | Challet Etienne | 4 |
| Publication | Filing date | Title |
|---|---|---|
| GB191020081A | Improved Micrometric Measuring Instrument. | |
| US1005883A | Instrument for making micrometric measurements. | |
| US980340A | Set-off square. | |
| GB191004505A | Set-off Square. | |
| GB190715582A | Improvements in Standard Calliper Gauges |