| Identifier | Title | Date | Event type | Other information | |
|---|---|---|---|---|---|
| KBA 9361.1430 | 4th Nov 1961 | Creation | digitized | prolonged period of protection | ||
| KBA 9361.435 | 10th May 1961 | Creation | digitized | prolonged period of protection | ||
| KBA 9362.16 | 6th Jan 1962 | Creation | digitized | prolonged period of protection |