| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 4 | |
| #2 | Austria | 3 | |
| #3 | Luxembourg | 3 | |
| #4 | Netherlands | 3 | |
| #5 | EPO (European Patent Office) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Installations for obtaining water | |
| #2 | Venting or aerating devices | |
| #3 | Pipes |
| # | Name | Total Patents |
|---|---|---|
| #1 | Altenbrandt Erhard | 5 |
| #2 | David Walfried | 3 |
| #3 | Maier Friedrich | 3 |
| #4 | David Waldfried | 2 |
| #5 | Ibanez Jose-Manuel Dipl-Ing | 1 |
| #6 | Schmidt Manfred Dipl Ing | 1 |
| #7 | Kunzmann Thomas Dipl Ing | 1 |
| #8 | Schmidt Manfred | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DE19916705C1 | Shut-off valve and process for its manufacture | |
| EP0668462A1 | Valve | |
| DE4243756A1 | hydrant | |
| ATA40792A | Hydrant | |
| DE4202237A1 | Tapping device for producing an outlet on a pressurized line | |
| DE4119104A1 | Underfloor hydrant |