| # | Country | Total Patents | |
|---|---|---|---|
| #1 | France | 5 | |
| #2 | Germany | 4 | |
| #3 | United Kingdom | 2 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Packaging and shipping | |
| #3 | Audio-visual technology | |
| #4 | Transport |
| # | Technology | |
|---|---|---|
| #1 | Shafts | |
| #2 | Transport or storage devices | |
| #3 | Special information storage | |
| #4 | Mining | |
| #5 | Railway systems |
| Publication | Filing date | Title |
|---|---|---|
| GB1149790A | Improvements in monorail aerial transporters with cable traction | |
| DE802331C | Longwall construction using support caps | |
| DE805390C | (Societe a Responsabilite Limitee), Valenciennes, Nord (France) Connection device for track frames | |
| GB680533A | Improvements in jointing devices for mine roof supports | |
| DE808581C | Pit lining device | |
| DE804905C | Screw-shaped chute device |