| # | Country | Total Patents | |
|---|---|---|---|
| #1 | EPO (European Patent Office) | 6 | |
| #2 | Germany | 3 | |
| #3 | United States | 2 | |
| #4 | Canada | 1 |
| # | Industry | |
|---|---|---|
| #1 | Electrical machinery and energy | |
| #2 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Installation of electric cables | |
| #2 | Pipes |
| # | Name | Total Patents |
|---|---|---|
| #1 | Hauff Werner | 12 |
| Publication | Filing date | Title |
|---|---|---|
| EP0355270A1 | Gashet for leading lines such as cables, pipes or the like through a wall opening | |
| EP0333983A1 | Feed-through for cables and pipes | |
| EP0333982A1 | Feed-through for cables, pipes and others | |
| EP0336006A2 | Wall feed through | |
| DE3731583C1 | Wall duct for cables | |
| DE3727159C1 | Lead-through for leading lines through a wall opening | |
| DE3727160C1 | Lead-through for cables through a wall opening |