| # | Country | Total Patents | |
|---|---|---|---|
| #1 | France | 7 | |
| #2 | Belgium | 6 | |
| #3 | Switzerland | 6 | |
| #4 | Germany | 6 | |
| #5 | United Kingdom | 6 | |
| #6 | Austria | 4 | |
| #7 | Italy | 4 | |
| #8 | Denmark | 2 | |
| #9 | Brazil | 1 | |
| #10 | Norway | 1 | |
| #11 | Sweden | 1 | |
| #12 | United States | 1 | |
| #13 | WIPO (World Intellectual Property Organization) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Mechanical elements | |
| #3 | Control | |
| #4 | Audio-visual technology | |
| #5 | Chemical engineering | |
| #6 | Furniture and games |
| # | Technology | |
|---|---|---|
| #1 | Street cleaning | |
| #2 | Servomotors | |
| #3 | Traffic control systems | |
| #4 | Cleaning | |
| #5 | Domestic washing | |
| #6 | Advertising | |
| #7 | Platform constructions |
| # | Name | Total Patents |
|---|---|---|
| #1 | Heidt Guenter | 8 |
| #2 | Heidt G | 4 |
| #3 | Guenter Heidt | 4 |
| #4 | Heidt Gunter | 1 |
| Publication | Filing date | Title |
|---|---|---|
| WO9721378A1 | High-pressure cleaning device | |
| DE2410627A1 | Support for traffic signs - has stand and-or boom of longitudinally and horizontally adjustable elements | |
| DE2351091A1 | SCRAPER FOR STREET CLEANING MACHINES | |
| GB1391128A | Pressure medium-actuated adjusting device | |
| GB1379307A | Road-sweeping machine | |
| GB1377252A | Street-sweeping machines | |
| GB1369668A | Scraping apparatus for road scraping vehicles | |
| GB1333621A | Scraper device for street cleaning |