Hermetically sealed {TAIL ~ electrically absorptive low pass radio frequency filters} and {HEAD ~ electromagnetically lossy ceramic materials} for said filters 
Hermetically sealed { TAIL ~ electrically absorptive low pass radio frequency filters } and { HEAD ~ electromagnetically lossy ceramic materials } for said filters
OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH