How to input copyright symbols and trademark patent symbols?

You can try the following methods. It says that the way to input copyright symbols is to hold down the Alt key and press 0, 1, 6, 9 in turn on the keyboard. The way to enter a trademark is to hold down the Alt key and press 0, 1, 5, 3 on the keyboard. I use a notebook without a keyboard, so I can't do the experiment.