| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Brazil | 3 | |
| #2 | Germany | 3 | |
| #3 | Mexico | 3 | |
| #4 | United States | 3 | |
| #5 | Canada | 2 | |
| #6 | United Kingdom | 2 | |
| #7 | Japan | 2 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Venting or aerating devices |
| # | Name | Total Patents |
|---|---|---|
| #1 | Constantino Daniel Guerrero | 5 |
| #2 | Works Madden T | 3 |
| #3 | Constantino Daniel G | 2 |
| #4 | Tort O Alejandro | 2 |
| #5 | Works M | 1 |
| #6 | Alejandro Tort O | 1 |
| #7 | Danieru Gerero Konsutanchino | 1 |
| #8 | Guerrero Daniel | 1 |
| #9 | Maden Torabuisu Waakusu | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB8416452D0 | Expanding gate valve | |
| US4326698A | Gate valve | |
| US4189127A | Expanding gate valve | |
| US4165064A | Gate valve |