Application to an L-1 visa begins with the filing of a petition with the U.S. Citizenship & Immigration Services (USCIS) on Form I-129, along with supporting documentation showing that both the U.S. company and the foreign parent, subsidiary, affiliate or branch meet the qualifying factors set forth in the law and regulations.[6]
Notice of approval of the Form I-129 is given by the USCIS on a Notice of Action, Form I-797, and using this as the basis of the application, the alien may apply for visa issuance at a consulate or embassy of the United States in the country having jurisdiction over their residence.
Application to an L-1 visa begins with the filing of a petition with the U.S. Citizenship & Immigration Services (USCIS) on Form I-129, along with supporting documentation showing that both the U.S. company and the foreign parent, subsidiary, affiliate or branch meet the qualifying factors set forth in the law and regulations.[6] Notice of approval of the Form I-129 is given by the USCIS on a Notice of Action, Form I-797, and using this as the basis of the application, the alien may apply for visa issuance at a consulate or embassy of the United States in the country having jurisdiction over their residence.
http://en.wikipedia.org/wiki/L-1_visa