| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 3 | |
| #2 | United Kingdom | 3 | |
| #3 | Netherlands | 3 | |
| #4 | EPO (European Patent Office) | 2 | |
| #5 | France | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Locks |
| # | Name | Total Patents |
|---|---|---|
| #1 | Stegeman Robert Arthur | 1 |
| #2 | Petelet Francois | 1 |
| #3 | Karl Klapproth Friedrich | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB8613437D0 | Latch assembly | |
| GB8526436D0 | Lock | |
| GB8426862D0 | Lock | |
| NL8303846A | Hook lock lock. | |
| DE1553413A1 | Door mortise lock with closed box | |
| DE1188974B | Bolt lock with several tumblers that rise in parallel | |
| DE1142526B | Door or window lock |