It is believed, therefore, that {HEAD ~ a method} of making {TAIL ~ a photoflash lamp} in the manner defined herein would constitute a significant advancement in the art 
of making
It is believed , therefore , that { HEAD ~ a method } of making { TAIL ~ a photoflash lamp } in the manner defined herein would constitute a significant advancement in the art
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH