| # | Country | Total Patents | |
|---|---|---|---|
| #1 | France | 7 | |
| #2 | United Kingdom | 5 | |
| #3 | Canada | 2 | |
| #4 | Switzerland | 2 | |
| #5 | Germany | 2 | |
| #6 | Austria | 1 | |
| #7 | Belgium | 1 | |
| #8 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Furniture and games | |
| #2 | Mechanical elements | |
| #3 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Domestic washing | |
| #2 | Pipes | |
| #3 | Kitchen equipment | |
| #4 | Spraying devices |
| # | Name | Total Patents |
|---|---|---|
| #1 | Doren Pierre Barthelemy Van | 2 |
| #2 | Doren Pierre Van | 2 |
| #3 | Doren Pierre B Van | 2 |
| #4 | Francois M P Van Doren | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB1025096A | Tube for vacuum cleaners | |
| GB1004344A | Accessory for suction cleaner | |
| GB852188A | Improvements in or relating to electrically heated hair driers | |
| GB764518A | Improvements in or relating to cleaning attachments for vacuum cleaner nozzles | |
| US2843400A | Handle of suction cleaners or polishers | |
| CA556663A | Vacuum cleaner | |
| CA544646A | Handle of suction cleaners or polishers |