| Identifier | Title | Date | Event type | Other information | |
|---|---|---|---|---|---|
| KBA 9307.16 | 25th Dec 1907 | Creation | digitized | prolonged period of protection | ||
| KBA 9307.8 | 22nd Jul 1907 | Creation | digitized | prolonged period of protection | ||
| KBA 9319.241 | 15th Nov 1919 | Creation | digitized | prolonged period of protection |