n*8
2 楼
.depends on the complexity of the invention and how well do you want to
protect your invention. The more you want, the more money you have to spend
on the application.
protect your invention. The more you want, the more money you have to spend
on the application.
s*m
3 楼
一个字：钱！如果有几万块的闲钱就可以。
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