English: A Sohio Boron branded gasoline station in 1972. The Standard Oil Company (Ohio) was only legally allowed to use the Sohio and Standard Oil brand names within the state of Ohio and marketed gasoline under various brand names outside its home state.
Note that it may still be copyrighted in jurisdictions that do not apply the rule of the shorter term for US works (depending on the date of the author's death), such as Canada (50 p.m.a.), Mainland China (50 p.m.a., not Hong Kong or Macao), Germany (70 p.m.a.), Mexico (100 p.m.a.), Switzerland (70 p.m.a.), and other countries with individual treaties.