| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Austria | 18 | |
| #2 | Switzerland | 4 | |
| #3 | Germany | 3 | |
| #4 | France | 3 | |
| #5 | United States | 3 | |
| #6 | United Kingdom | 2 | |
| #7 | Spain | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Machine tools | |
| #3 | Control |
| # | Name | Total Patents |
|---|---|---|
| #1 | Helgemeir Heinrich | 4 |
| #2 | Heinrich Helgemeir | 2 |
| #3 | Karl Langkammerer | 1 |
| #4 | Ernst Egger | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB1083061A | Correcting railway track | |
| FR620231A | Snap-in nut wrench | |
| US1652367A | Double-acting ratchet wrench | |
| FR615256A | Double action ratchet cie | |
| FR610534A | Rail drilling machine with tilting bracket |