The PERI Duo is an iPhone battery case for the frequent entertainer — those who go out with friends and find that they're the one stuck hooking their phone up to a speaker and doing some impromptu D
<img src="http://www.crunchbase.com/assets/images/resized/0009/5549/95549v1-max-250x250.png" class="shot2"></img> The Dow Chemical Company (<a href="http://www.nyse.com/about/listed/quickquote.html?ti