| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Austria | 6 | |
| #2 | Canada | 3 | |
| #3 | Switzerland | 3 | |
| #4 | Spain | 3 | |
| #5 | Denmark | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machines | |
| #2 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Blasting | |
| #2 | Earth drilling |
| # | Name | Total Patents |
|---|---|---|
| #1 | Karollus Edmund | 10 |
| #2 | Edmund Karollus | 3 |
| Publication | Filing date | Title |
|---|---|---|
| ES128938A1 | Improvements in the blasting or explosion of blastholes | |
| CA254928A | Safety device for explosive cartridges | |
| CA341044A | Blasting and dynamiting method | |
| CA284690A | Blasting mechanism |