CEB F30T12 fluorescent light fixtures (1970s)

These are pretty cool. One has a vintage Sylvania Lifeline bulb in it, which someone on Lighting Gallery has dated to be from March of 1980. I will be posting a picture of a fixture itself on there to see if anyone can date it. http://www.lighting-gallery.net/gallery/displayimage.php?album=lastcom&cat=11482&pos=3&pid=72890