Todd W Lainhart wrote:
> David Charlap wrote:
>>
>> And they wouldn't be able to patent it as their own. (For the same
>> reason Visix couldn't patent it - prior art.)
>
> What was the prior art?

I don't know precisely, but I believe there was some MIT research work
done and a proof-of-concept published prior to Visix's implementation in
a commercial product.

Perhaps someone who was involved in Visix's attempted patent application
(which took place before I joined them) would know more details.

-- David