I just finished taking photos of the last of the four GRiD laptop models
note the directories:
Gridcase2 / GRiDCase PLUS (no model # is visible, but it appears to be
slightly older than the 1040 and probably came out with the 1500 series)
1040 (my favorite)
1910 (touch pad)
There is not a lot about GRiD systems on the web, but my knowledge is
first hand, I worked on these when I was in the corporate world. GRiD
is still around and has a page dedicated to the history/milestones.
I am looking for the 1720 model, in working order.