| # | Country | Total Patents | |
|---|---|---|---|
| #1 | France | 3 | |
| #2 | United Kingdom | 3 | |
| #3 | Germany | 2 | |
| #4 | Italy | 1 | |
| #5 | Sweden | 1 | |
| #6 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Packaging and shipping | |
| #2 | Mechanical elements | |
| #3 | Transport | |
| #4 | Engines, pumps and turbines |
| # | Technology | |
|---|---|---|
| #1 | Servomotors | |
| #2 | Motor vehicles | |
| #3 | Lifting and pushing | |
| #4 | Cyclically operating valves | |
| #5 | Pumps |
| # | Name | Total Patents |
|---|---|---|
| #1 | Denis A | 2 |
| Publication | Filing date | Title |
|---|---|---|
| GB1384906A | Hydraulic jack lifting apparatus | |
| US3800537A | Control systems for operating jack units | |
| GB1326039A | Hydraulic jack | |
| GB1215760A | Hydro-pneumatic pumping apparatus | |
| FR1402104A | Hydropneumatic pump operated by compressed air to deliver pressurized liquids |