Necessity is the mother of invention, but patent right is the father. - Josh Billings.

需要是发明之母，但专利权是发明之父！——乔什·比林斯。

youdao

Necessity is the mother of invention, but patent right is the father. - Josh Billings.

需要是发明之母，但专利权是发明之父！——乔什·比林斯。

youdao