The method 19 wherein the electron emission substrate comprises {TAIL ~ a conductive extraction grid} formed outwardly of and spaced from {HEAD ~ the projecting emitters}, the deposit occurring after formation of the extraction grid 
The method 19 wherein the electron emission substrate comprises { TAIL ~ a conductive extraction grid } formed outwardly of and spaced from { HEAD ~ the projecting emitters } , the deposit occurring after formation of the extraction grid
OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH