| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Switzerland | 4 | |
| #2 | Austria | 3 | |
| #3 | Canada | 2 | |
| #4 | Germany | 1 | |
| #5 | Spain | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machine tools |
| # | Technology | |
|---|---|---|
| #1 | Making screws | |
| #2 | Forging | |
| #3 | Metal-working |
| # | Name | Total Patents |
|---|---|---|
| #1 | Erdelyi Ferenc | 5 |
| #2 | Ferenc Erdelyi | 4 |
| Publication | Filing date | Title |
|---|---|---|
| ES285574A3 | Procedure for the manufacture of tools (Machine-translation by Google Translate, not legally binding) | |
| CA614871A | Method and device for rolling bevel gears | |
| CA756829A | Process and device to roll tap drills |