As long as you apply for a patent, even if you apply today, there will be an announcement online immediately! I have visited the website of the Intellectual Property Bureau, and there is no patent for this number. You must have been deceived! If you don’t believe it, check it out on the Intellectual Property Bureau’s website. The URL is /sipo/. This type of product will have a certain impact on your baby, because the younger you are, the wider the range of sound frequencies you can hear. If during use, you If your baby appears restless or has a headache, it is recommended that you stop using this product! After all, the baby is the most important!