| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United Kingdom | 4 | |
| #2 | Austria | 2 | |
| #3 | Canada | 2 | |
| #4 | Switzerland | 2 | |
| #5 | Denmark | 2 | |
| #6 | Spain | 1 | |
| #7 | France | 1 | |
| #8 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machine tools | |
| #2 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Making metal chains | |
| #2 | Belts or cables for driving | |
| #3 | Making needles |
| # | Name | Total Patents |
|---|---|---|
| #1 | Wilke Gustav | 12 |
| #2 | Gustav Wilke | 2 |
| Publication | Filing date | Title |
|---|---|---|
| GB191301641A | Apparatus for Bending and Welding Chains, Rings of Various Sections and the like, from U-shaped Blanks with Obliquely Cut Ends. | |
| GB190313336A | Improvements in Unwelded Chains. | |
| CA76799A | Chain links | |
| GB190200841A | Process of and Apparatus for Grinding Pens. | |
| US688914A | Chain-link. | |
| CA62342A | Chain-link, hook and ring | |
| GB189726392A | Improvements in Chain-links, Hooks, and Rings. |