| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Australia | 1 | |
| #2 | Canada | 1 | |
| #3 | Egypt | 1 | |
| #4 | EPO (European Patent Office) | 1 | |
| #5 | Ireland | 1 | |
| #6 | India | 1 | |
| #7 | Republic of Korea | 1 | |
| #8 | Mexico | 1 | |
| #9 | Norway | 1 | |
| #10 | USSR (Union of Socialist Soviet Republics) | 1 | |
| #11 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Shaping clay |
| # | Name | Total Patents |
|---|---|---|
| #1 | Bunn Christopher B | 8 |
| #2 | Bunn Christopher Brian | 1 |
| #3 | Christopher B Bunn | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US4548565A | Extrusion machine | |
| SU1531843A3 | Machine for manufacturing long hollow articles from concrete mixes | |
| IE822664L | An extrusion machine |