From: Robert J. Bradbury (bradbury@www.aeiveos.com)
Date: Wed Dec 22 1999 - 06:56:11 MST
On Tue, 21 Dec 1999, Spike Jones wrote:
> Robert J. Bradbury wrote:
>
> > ...Eric Drexler and Keith Henson have patents on space devices
> > that will probably expire before we have affordable access to space
> > that might make them valuable....
>
> In fact, Eric has had a number of space patents that have already already
> expired. {8-[ spike
The only patents I can find are:
US04759404 (1988): http://www.patents.ibm.com/details?pn=US04759404__
US04480677 (1984): http://www.patents.ibm.com/details?pn=US04480677__
These are still in effect.
Since Eric is about my age, unless he started patenting stuff before his
mid-20's (undergraduate & early graduate years) his patents should still
be in effect.
Robert
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