Season 4, Episode 13 Shark Tank
First Aired: January 11, 2013
A pair of chemical engineers demonstrate a capsule that can keep liquids hot for a longer period of time; a mom has an idea for cleaning stuffed toys; two Oakland men try to drum up interest in their garden-wall system; and a married couple dish out ice cream made with liquid nitrogen. Also: an update on a jewelry business from Season 3.
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- Premiered: August 9, 2009
- Rating: TV-PG
- Premise: Contestants present business ideas to five multimillionaires, who will either invest or pass. (more)
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