Web site for the U.S. patent and Trademark Commission in Washington D.C.?
Answer:
http://www.uspto.gov/
http://patft.uspto.gov/
http://www.uspto.gov/main/trademarks.htm. -- USPTO's Main Trademark Page
Prior to investing your time, money & effort into a name, it is strongly advised that comprehensive research be conducted to ensure that the name you're interested in is truly available.
This entails searching the pending & registered Federal and State trademark files as well as the US National Common-Law files. Then, if clear, you can decide if you would like to file for a Federal or a State trademark.
I listed some links where you can do some preliminary name checking. However, please be aware that this is merely scratching the surface of what's out there. Only comprehensive research will tell you if the name is truly available. But, these links are free & a great place to start, so I'd try them out first.
There are other sites that offer free searching capabilities in conjunction with their commercial services, so I'm not able to post those links due to the Yahoo! TOS. You'll also want to check domain names & yellow pages, so simply do a search for "free domain name search" and "national yellowpages" and the appropriate links will pop up.
Hope that helps! I wish you much success & happiness in all your ventures!
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