| # | Country | Total Patents | |
|---|---|---|---|
| #1 | South Africa | 3 | |
| #2 | Australia | 2 | |
| #3 | United Kingdom | 2 | |
| #4 | United States | 2 | |
| #5 | Canada | 1 | |
| #6 | Germany | 1 | |
| #7 | France | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machine tools | |
| #2 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Making metal sheets | |
| #2 | Punching metal | |
| #3 | Unspecified technologies | |
| #4 | Perforating |
| # | Name | Total Patents |
|---|---|---|
| #1 | Hale Reginald D | 5 |
| #2 | Hale R | 3 |
| #3 | Hale Gerald K | 1 |
| #4 | Hale Arthur W | 1 |
| #5 | D Hale Reginald | 1 |
| Publication | Filing date | Title |
|---|---|---|
| ZA7105866B | Pipe forming apparatus | |
| ZA7104375B | Drainage pipe | |
| US3694892A | Apparatus for and the method of making spiral seamed laminated sheet metal pipe | |
| CA883780A | Apparatus for and the method of, making spiral seamed laminated sheet metal pipe | |
| US3491639A | Tube perforator |