In the 60s, General Electric made some fluorescent lamps called type "F", which were in the form of a large, square panel; one side was a sheet of glass with a serpentine shape molded in like half a tube, while the other side had a waffle pattern, and the two were sealed together, forming a snakey fluorescent lamp which presented itself as a square panel.
Does anyone here know who has an old stock of these, if anyone?