| Identifier | Title | Date | Event type | Other information | |
|---|---|---|---|---|---|
| KBA 14061 | ca. 1921 | Creation | digitized | Standard period of protection | ||
| KBA 9342.328 | 16th Sep 1942 | Creation | digitized | prolonged period of protection | ||
| KBA 98367.1 | 9th Oct 1942 | Creation | digitized | prolonged period of protection |