How many patents is the patent publication number AB?

When it was released, it was WeChat official account, and when it was authorized to be released, it was the announcement number. Both China patent documents start with CN, but the difference lies in the last code, WeChat official account A and announcement B.

Patent publication number, also known as patent contribution number, consists of "country number+classification number+serial number+identification number", such as CN 1340998A, which stands for China No.340998 invention patent. The first number 1 after CN indicates invention, 2 indicates practicality, and 3 indicates appearance.

You have the wrong patent number here. There are too many Arabic numerals.