Can I come in and watch him
invent the TELEPHONE?"
The Big Bang Theory Season 1, Episode 14
How the hell did you get them up
on that TELEPHONE wire?
The Big Bang Theory Season 2, Episode 7
Yeah, now stand back
while I invent the TELEPHONE.
The Big Bang Theory Season 8, Episode 18
(TELEPHONE RINGING)
The Big Bang Theory Season 2, Episode 7
Good choice. Alexander Graham Bell
invents the TELEPHONE and calls for Watson.
The Big Bang Theory Season 1, Episode 14