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谁都知道,贝尔是电话的发明人,但是,有人把他告上了法庭!这个人就是发明家伊莱沙·格雷。格雷认为,他应该拥有电话发明的专利权。为此,他还提供了自己的证据。原来,在贝尔
Everyone knows that Bell was the inventor of the telephone, but someone has brought him to court! This man is the inventor Elisha Gray. Gray thinks that he should have the right to invent the telephone. To this end, he also provided his own evidence. It turns out that at Bell