This invention relates to a means for more efficiently and more safely providing self luminous lighting devices for {HEAD ~ use} in {TAIL ~ signs}, markers, indicators and the like 
in
This invention relates to a means for more efficiently and more safely providing self luminous lighting devices for { HEAD ~ use } in { TAIL ~ signs } , markers , indicators and the like
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH