| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United Kingdom | 7 | |
| #2 | Australia | 4 | |
| #3 | Sweden | 2 | |
| #4 | Canada | 1 | |
| #5 | Italy | 1 | |
| #6 | Netherlands | 1 |
| # | Industry | |
|---|---|---|
| #1 | Electrical machinery and energy | |
| #2 | Mechanical elements | |
| #3 | Environmental technology | |
| #4 | Chemical engineering | |
| #5 | Engines, pumps and turbines | |
| #6 | Machines | |
| #7 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Electric switches | |
| #2 | Servomotors | |
| #3 | Venting or aerating devices | |
| #4 | Reduction of greenhouse gas emissions | |
| #5 | Springs | |
| #6 | Cooling of machines | |
| #7 | Earth drilling | |
| #8 | Separation | |
| #9 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Gratzmuller J L | 6 |
| #2 | Gratzmuller Jean Louis | 3 |
| Publication | Filing date | Title |
|---|---|---|
| GB1458131A | Filter for liquids containing a gas | |
| GB1355767A | Cooling devices of internal combustion engines | |
| GB1365356A | Pneumatic spring devices |