| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 5 | |
| #2 | Switzerland | 3 | |
| #3 | Germany | 3 | |
| #4 | France | 3 | |
| #5 | United Kingdom | 3 | |
| #6 | Italy | 3 | |
| #7 | Japan | 3 | |
| #8 | EPO (European Patent Office) | 2 |
| # | Industry | |
|---|---|---|
| #1 | Machine tools | |
| #2 | Materials and metallurgy | |
| #3 | Thermal processes |
| # | Technology | |
|---|---|---|
| #1 | Grinding or polishing devices | |
| #2 | Furnaces | |
| #3 | Metal tempering | |
| #4 | Metal wire processing |
| # | Name | Total Patents |
|---|---|---|
| #1 | Frei Max | 10 |
| #2 | Matsukusu Furai | 2 |
| #3 | Suter Rolf | 2 |
| #4 | Furai Matsukusu | 1 |
| Publication | Filing date | Title |
|---|---|---|
| EP0211242A2 | Spring-coiling machine | |
| JPS58205633A | Device for manufacturing screw | |
| EP0095027A1 | Spring winding machine | |
| JPS53115993A | Grinding machine | |
| GB1506796A | Annealing furnace | |
| US3992820A | Grinding machine including means to supply coolant to the work area |