To make matters even more interesting some researchers suggest that Elisha Gray, a professor at Oberlin College, applied for a caveat of the telephone on _______ (6) same day Bell...

Câu hỏi :

To make matters even more interesting some researchers suggest that Elisha Gray, a professor at Oberlin College, applied for a caveat of the telephone on _______ (6) same day Bell applied for his patent of the telephone- these gentlemen didn’t actually visit the Patent Office, their lawyers did _______ (7) their behalf.