| Identifier | Title | Date | Event type | Other information | |
|---|---|---|---|---|---|
| KBA 9319.2 | 1st Jan 1919 | Creation | digitized | prolonged period of protection | ||
| KBA 9325.8 | 12th Jan 1925 | Creation | digitized | prolonged period of protection | ||
| KBA 9334.1051 | ca. 6th Nov 1934 | Reception | digitized | prolonged period of protection |