As early as 1926, Anderson-Prichard began attempts at trademarking the acronym, first through overtures to the American Pacific Company, and later through communications with the American Oil Company, whose trading name AMOCO was thought to be too similar.
[3] The company operated service stations around Oklahoma and neighboring states including Texas, Kansas, Arkansas, and Missouri, as well as states further afield in the Midwest such as Nebraska, North Dakota, South Dakota, Minnesota, Iowa, Wisconsin and Illinois.
The APCO logo was still used after the company’s dissolution by many independent service stations, and can still be spotted occasionally in the region.
[4] The “APCO” name was again used by Lev Prichard III, grandson of Anderson-Prichard Oil co-founder Lev Prichard, when he created Apco Minerals, LLP in 1995 to manage the family’s legacy mineral rights.
"APCO" is also the name used by the independent Australian service-station franchise Anderson Petroleum Company.