{HEAD ~ Metal} cased {TAIL ~ electrical filters} are made by reflowing the material to form fused glass to metal seals and incorporating electrical thru conductors therein which may be formed as inductive windings 
cased
{ HEAD ~ Metal } cased { TAIL ~ electrical filters } are made by reflowing the material to form fused glass to metal seals and incorporating electrical thru conductors therein which may be formed as inductive windings
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