| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Switzerland | 3 | |
| #2 | Austria | 2 | |
| #3 | Australia | 2 | |
| #4 | Belgium | 2 | |
| #5 | Canada | 2 | |
| #6 | Germany | 2 | |
| #7 | Finland | 2 | |
| #8 | France | 2 | |
| #9 | Norway | 2 | |
| #10 | United Kingdom | 1 | |
| #11 | Netherlands | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Materials and metallurgy | |
| #3 | Packaging and shipping | |
| #4 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Finishing work on buildings | |
| #2 | Building materials | |
| #3 | Pipes | |
| #4 | Containers for goods storage |
| # | Name | Total Patents |
|---|---|---|
| #1 | Hoellfritsch Erich | 11 |
| #2 | Erich Hoellfritsch | 2 |
| Publication | Filing date | Title |
|---|---|---|
| FI752913A | Mass for roller crushers for container conditioning | |
| GB1280953A | Method of laying a horizontal cover on a bearing surface | |
| CA909613A | Process for the manufacture of a covering based on anhydrite | |
| CA887945A | Method of laying a horizontal cover on a bearing surface |