| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Machine tools | |
| #3 | Electrical machinery and energy | |
| #4 | Surface technology and coating | |
| #5 | Textiles and paper | |
| #6 | Consumer goods |
| # | Technology | |
|---|---|---|
| #1 | Pipes | |
| #2 | Making metal sheets | |
| #3 | Manufacturing artificial filaments | |
| #4 | Hand-held cutting tools | |
| #5 | Special designs | |
| #6 | Installation of electric cables | |
| #7 | Nails | |
| #8 | Coating metallic material | |
| #9 | Punching metal |
| # | Name | Total Patents |
|---|---|---|
| #1 | Kreidel Hans | 1 |
| Publication | Filing date | Title |
|---|---|---|
| CA399041A | Metal packing ring for pipes |