How to Search German Patent Literature

This is very simple. I'll tell you the steps. You can see a microscope lens to protect your sleep by searching for Zengdong patent in Chengdu on Google. This is what you are looking for.

Then you can search with the above name (you can see his WeChat official account wo/2006/111070).

If you use this WeChat official account search again, you will see WIPO. After clicking enter, you can download the PDF of the document in the directory bar.

It's hard to find, but I still hope to adopt.