The full name is Bipolar Oblique Conic Conformal Projection. It was developed in 1941 by O. M. Miller and W. A. Briesemeister in order to create new maps of North and South America and is an adaptation of the Lambert Conformal Conic projection. Bipolar Conic is a conformal projection made up of two oblique conic projections placed beside one another with poles 104 degrees apart. The parallels and meridians cross at right angles but are complex curves.

This projection is supported in the spherical form only.