| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 7 | |
| #2 | Austria | 3 | |
| #3 | Switzerland | 3 | |
| #4 | Belgium | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Consumer goods |
| # | Technology | |
|---|---|---|
| #1 | Locks | |
| #2 | Hinges for doors or windows | |
| #3 | Indexing scheme relating to hinges | |
| #4 | Hand carried bags | |
| #5 | Platform constructions |
| # | Name | Total Patents |
|---|---|---|
| #1 | Wilke Heinrich | 11 |
| #2 | Heinrich Wilke | 3 |
| #3 | Rudolf Wilke Dipl-Wirtsch-Ing | 2 |
| #4 | Wilke Rudolf | 2 |
| #5 | Wilke Rudolf Dipl-Wirtsch-Ing | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DE1907434A1 | Door plates and pusher rosettes with adjustable pusher bearing hole | |
| DE1907191A1 | Fire proof safety door handles |