Today in 2011, just four years ago, US Patent 20110000913 A1 was issued, an invention of Todd Allen Bland, for a “Beer Can with Top and Bottom Pull Tabs.” Here’s the Abstract:

The herein invention discloses improvements to the conventional beer, soda or vegetable juice can such as tomato as well as medical or automotive such as oil cans containing fluid. The improvements consisting of one or a plurality of pull tabs on the top and the bottom of the can allowing the liquid to empty out of the cans in a matter of seconds. Prior art only shows one pull tab on the top taking the cans too long to empty for consumers that desire their beverage to flow quicker and to avoid spraying their beverage potentially getting in to the eyes of consumers and destroying property such as clothes and furniture as it is widely known consumers puncture holes toward the bottom of the can to release the liquid quicker endangering themselves and others by spraying beverage and by the sharp objects used to make the holes in the cans. My new invention will improve safety for these types of consumers furthermore if the top tab breaks the bottom pull tab will allow the can to be opened. Additionally, a tomatoe juice can having two pull tabs on the top allows the thick juice to flow more rapidly. This also relieves having a sharp can opener to accomplish this task.