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"Which ingenuity? In which way is it ingenius when i invent a mouse wheel on my own and have to pay someone else because s/he was first, while i never knew about that?"
You didn't know there was such a thing as wheel mouse and you came up with it all on your own? All you have to do is find a way to improve on the design and you have a new patent.
Here I'll give you one. Add a horizontal wheel for the horizontal scroll bar. Place it just in front of the existing vertical one on your mouse and voila.
I am not promising that somenone else hasn't already beaten me to it though. Sometimes a person doesn't get the ticket and has to wait for the next show.