400. That’s an error.

Google cannot redirect you to https://www.booklooker.de/B%C3%BCcher/Albert-Carsten-F-Patente-in-der-Fusionskontrolle/id/A02cDMSQ01ZZw?pid=8 because the request was invalid.

This might be because the link was created a long time ago. Try your search again on Google. That’s all we know.