How to find the phone number of the manufacturer by querying the patent number?

Patent query mode is 1, which can generally be queried in China National Intellectual Property Administration public database. 2. You can entrust a patent search center to make professional inquiries; 3. You can inquire by letter, and write clearly the description of your patent and the contents to be inquired to the China National Intellectual Property Administration Patent Office; 4. You can check face-to-face and go directly to the China National Intellectual Property Administration patent situation for consultation; 5. You can also ask by phone.