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A comment on Blit: a multitasking, windowed Unix GUI from 1982. Parent comment

Re:Blit: a multitasking, windowed Unix GUI from 1982 by wickedchicken on Wednesday August 29, 2012 @11:24AM (#4449032)
> When did Apple patent pinch-to-zoom? This video is from 1988.

The video is from 1988, but it appears the work was around 1983. The pinch-to-zoom (on 'portable communication devices') patent[1] was filed in 2006, issued in 2010.

[1] http://goo.gl/gHgEB

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Re:Blit: a multitasking, windowed Unix GUI from 1982 by EGreg on Wednesday August 29, 2012 @04:45PM (#4451058)
If that is the case, what about the Jeff Han video which came out in 2006? Jeff Han was obviously working on it for at least a year before he gave that talk. Shouldn't that be obvious prior art? He talks about pinch and much more!
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