Process for the prepration of a catalytic system, process for the (co)polymerization of olefins and (co)polymers of at least one olefin

Granted: Mar 18, 1997 Filed: Jun 4, 1993

This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.