Sinclair Oil Corporation was created on 1916-05-01.
Richfield Oil Corporation was created in 1905.
Indian Oil Corporation was created in 1964.
National Oil Corporation was created in 1970.
Korea National Oil Corporation was created in 1979.
China National Offshore Oil Corporation was created in 1982.
Your Sinclair was created in 1983.
Sinclair Baronets was created in 1786.
Sinclair Cambridge was created in 1973.
Sinclair Sovereign was created in 1976.
Sinclair Research was created in 1973.
Sinclair BASIC was created in 1979.
Sinclair User was created in 1982.