| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Canada | 2 | |
| #2 | France | 2 | |
| #3 | Belgium | 1 | |
| #4 | Switzerland | 1 | |
| #5 | Germany | 1 | |
| #6 | EPO (European Patent Office) | 1 | |
| #7 | United Kingdom | 1 | |
| #8 | United States | 1 | |
| #9 | South Africa | 1 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Control |
| # | Technology | |
|---|---|---|
| #1 | Venting or aerating devices | |
| #2 | Teaching materials | |
| #3 | Pistons and sealings |
| # | Name | Total Patents |
|---|---|---|
| #1 | Friess Jean | 7 |
| Publication | Filing date | Title |
|---|---|---|
| CA2106134A1 | Training machine-tool | |
| US4247079A | Annular valve seating | |
| CA1059105A | Annular valve seating | |
| DE2724790A1 | Removable valve seat assembly - has annular member held in position by collar in housing | |
| GB1583085A | Butterfly valve for high temperature service | |
| CH616496A5 | Seal for a cock or tap |