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Date:      Tue, 04 Jan 2000 11:03:39 -0700
From:      Warner Losh <imp@village.org>
To:        Peter Wemm <peter@netplex.com.au>
Cc:        mjacob@feral.com, cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org
Subject:   Re: cvs commit: src/sys/dev/dec mcclock.c 
Message-ID:  <200001041803.LAA60654@harmony.village.org>
In-Reply-To: Your message of "Tue, 04 Jan 2000 15:12:55 %2B0800." <20000104071255.D2B501CC6@overcee.netplex.com.au> 
References:  <20000104071255.D2B501CC6@overcee.netplex.com.au>  

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In message <20000104071255.D2B501CC6@overcee.netplex.com.au> Peter Wemm writes:
: Hmm, it looks like we have another 'prior art' to shoot down the y2k
: windowing patent.  We've used the 1970 window since at least as far
: back as 1994.  It was "intented" and patented in Feb 1995:
: http://www.washingtonpost.com/wp-srv/WPlate/1999-12/17/081l-121799-idx.html

I saw the window prior art as far back as the 1970s when reading about
the 2 digit date problem, as it was know at the time.  And I know my
professors in college in the mid 80's mentioned it as well.  If
anybody hassles us, I'll dig up my notes.

Also, NPR had a story of an old Cobol programmer talking about using
this in the late 60s/early 70s when the first 30 year bonds to cross
the centry line...  Even if this person had patented the technique at
the time, that patent would have long expired by now.  And they
couldn't patent it at the time.

Warner




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