| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 9 | |
| #2 | France | 4 | |
| #3 | United Kingdom | 2 | |
| #4 | Austria | 1 | |
| #5 | Brazil | 1 | |
| #6 | Switzerland | 1 | |
| #7 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machine tools | |
| #2 | Civil engineering | |
| #3 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Turning | |
| #2 | Earth drilling | |
| #3 | Percussive tools | |
| #4 | Unspecified technologies | |
| #5 | Accessories for machine tools |
| # | Name | Total Patents |
|---|---|---|
| #1 | Reinholdt Willy | 5 |
| #2 | Jensen Jimmy | 3 |
| #3 | Nielsen Mogens B | 3 |
| #4 | Boa Niels Halfdan | 3 |
| #5 | Boa N | 1 |
| #6 | Willy Reinholdt | 1 |
| #7 | Nielsen M | 1 |
| #8 | Jensen J | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB1494106A | Tool holder especially for hammer drills | |
| DE2451265A1 | Impact drilling equipment - has bit shank recess accommodating tool holder protrusion joined onto open-ended guide surface | |
| DE2440082A1 | Impact drilling equipment - has bit shank recess accommodating tool holder protrusion joined onto open-ended guide surface | |
| DE2420054A1 | DEVICE FOR TRANSFERRING THE IMPACT FORCE TO A TOOL | |
| DE2403722A1 | DRILL | |
| DE2356825A1 | PIPE DRILLS |