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From: gwyn@BRL-TGR.ARPA
Newsgroups: net.unix-wizards
Subject: Re: UNIX trademark registration
Message-ID: <6562@brl-tgr.ARPA>
Date: Sun, 9-Dec-84 14:28:00 EST
Article-I.D.: brl-tgr.6562
Posted: Sun Dec  9 14:28:00 1984
Date-Received: Thu, 13-Dec-84 03:04:42 EST
Sender: news@brl-tgr.ARPA
Organization: Ballistic Research Lab
Lines: 10

If you have access to source code for ANY version of UNIX, you are
supposed to be bound by your site's license agreement with AT&T.
That is what keeps UNIX a trade secret.  Certainly, UCB can add
their own restrictions for their enhancements ON TOP of AT&T's.

For a UNIX look-alike to be free of AT&T ownership, it would have
to be developed entirely from publicly available information.
Although this covers a lot of ground, that is still so much work
that only a few vendors offer such systems, and they are hard put
to track newer developments of the "official" UNIX product.