| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 8 | |
| #2 | Switzerland | 7 | |
| #3 | France | 2 | |
| #4 | Belgium | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machine tools | |
| #2 | Mechanical elements | |
| #3 | Control |
| # | Technology | |
|---|---|---|
| #1 | Accessories for machine tools | |
| #2 | Safety devices | |
| #3 | Gearing | |
| #4 | Pistons and sealings | |
| #5 | Shafts | |
| #6 | Control or regulating systems | |
| #7 | Belts or cables for driving | |
| #8 | Clutches and brakes | |
| #9 | Punching metal | |
| #10 | Springs |
| # | Name | Total Patents |
|---|---|---|
| #1 | Hennig Arnold | 8 |
| #2 | Arnold Hennig | 7 |
| #3 | Kurt Hennig | 7 |
| #4 | Hennig Kurt | 4 |
| Publication | Filing date | Title |
|---|---|---|
| DE2020109A1 | Cover on machine tools | |
| DE927362C | Protection device for the slideway of moving parts of machine tools | |
| DE897782C | Harmonica-like bellows to protect the guide tracks of moving parts of machine tools | |
| DE889247C | Bellows folded like a harmonica to protect the guideways of moving parts of machine tools |