Patent classifications
G
PHYSICS
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G21
NUCLEAR PHYSICS; NUCLEAR ENGINEERING
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G21H
OBTAINING ENERGY FROM RADIOACTIVE SOURCES; APPLICATIONS OF RADIATION FROM RADIOACTIVE SOURCES, NOT OTHERWISE PROVIDED FOR; UTILISING COSMIC RADIATION
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3/00
Arrangements for direct conversion of radiation energy from radioactive sources into forms of energy other than electric energy, e.g.; into; light; or mechanic energy
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G21H3/02
in which material is excited to luminesce by the radiation
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