| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 3 | |
| #2 | Denmark | 3 | |
| #3 | Sweden | 3 | |
| #4 | Austria | 2 | |
| #5 | Canada | 2 | |
| #6 | Switzerland | 2 | |
| #7 | Finland | 2 | |
| #8 | France | 2 | |
| #9 | United Kingdom | 2 | |
| #10 | Netherlands | 2 | |
| #11 | United States | 2 | |
| #12 | Israel | 1 | |
| #13 | Japan | 1 | |
| #14 | Norway | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machine tools | |
| #2 | Machines | |
| #3 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Turning | |
| #2 | Nails | |
| #3 | Percussive tools | |
| #4 | Unspecified technologies | |
| #5 | Unspecified technologies | |
| #6 | Shafts |
| # | Name | Total Patents |
|---|---|---|
| #1 | Chromy Franz | 15 |
| #2 | Scholz Dieter | 5 |
| #3 | Krueger Wilm | 5 |
| #4 | Rumpp Gerhard | 5 |
| #5 | Chromy F | 2 |
| #6 | Franz Chromy | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DE2509140A1 | DRILLING TOOL WITH DRILL AND ADAPTER | |
| FR1485990A | Self-drilling anchor | |
| FR1474255A | Device for driving self-drilling anchors | |
| DE1255395B | Self-drilling anchor | |
| DE1478856A1 | Device for driving in self-drilling anchors | |
| CA799329A | Percussion tool for driving self-drilling anchors and like fasteners | |
| CA777503A | Self-drilling anchor |