[comp.windows.news] Postscript Patent?

pollack@toto.cis.ohio-state.edu (Jordan B. Pollack) (02/16/89)

Glen Reid, writes:

> We have a proprietary implementation of a PostScript interpreter dating
> from 1985, and are well known as its inventor.

Not to pick nits, but this is sorta like Apple or Microsoft 
claiming to have invented window systems.

I thought that Postscript was just Xerox's INTERPRESS with a
symbol table... 

Who holds the patents?