US PATENT SUBCLASS 976 / DIG 420
.~ In which material is excited to luminesce by the radiation [G21H-3/02]


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976 /   HD   NUCLEAR TECHNOLOGY

DIG 419  DD  ARRANGEMENTS FOR DIRECT CONVERSION OF RADIATION ENERGY FROM RADIOACTIVE SOURCES TO FORMS OF ENERGY OTHER THAN ELECTRIC ENERGY (e.g., light) [G21H-3/00] {1}
DIG 420.~ In which material is excited to luminesce by the radiation [G21H-3/02]