
we've put a lot of thought and effort
into this current PROTOTYPE.
The Big Bang Theory Season 10, Episode 23

Penny says they're having fun
working on the PROTOTYPE.
The Big Bang Theory Season 9, Episode 19

but we did kinda have fun
working on the PROTOTYPE.
The Big Bang Theory Season 9, Episode 19

that allowed us to get the size
of the PROTOTYPE down to the target specs.
The Big Bang Theory Season 10, Episode 15

helping to build a PROTOTYPE
for a high-tech guidance system.
The Big Bang Theory Season 9, Episode 19