making {HEAD ~ a scratch} on {TAIL ~ at least one corner} of the panel portion of the cathode ray tube, said scratch being substantially parallel to an interface between said panel portion and a funnel portion of the cathode ray tube 
on
making { HEAD ~ a scratch } on { TAIL ~ at least one corner } of the panel portion of the cathode ray tube , said scratch being substantially parallel to an interface between said panel portion and a funnel portion of the cathode ray tube
OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL 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 OTH OTH OTH OTH