Grid Syetms laptops-When Were They produced?

I reacll an arly laptop mfg. called Grid Systems-they had a very unusual, bright display (when other mfgs. had very crude and fuzzy LCDs).
How long were these people in business-what happened to them?

GRiD Systems Corp. was acquired by Tandy Corp. in 1988.

The laptop has its own Wikipedia page.