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