| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Australia | 1 | |
| #2 | Brazil | 1 | |
| #3 | Canada | 1 | |
| #4 | Chile | 1 | |
| #5 | China | 1 | |
| #6 | EPO (European Patent Office) | 1 | |
| #7 | Republic of Korea | 1 | |
| #8 | Mexico | 1 | |
| #9 | New Zealand | 1 | |
| #10 | United States | 1 | |
| #11 | WIPO (World Intellectual Property Organization) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machines | |
| #2 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Venting or aerating devices | |
| #2 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Palmer Michael J | 11 |
| Publication | Filing date | Title |
|---|---|---|
| AU2013202121A1 | Gate valve with equalizer port | |
| US2013056670A1 | Gate valve with equalizer port | |
| NZ588356A | Gate valve with a gate that can be moved linearly to open and close the gate and including an equaliser port |