US PATENT SUBCLASS 976 / DIG 403
RADIOACTIVE SOURCES [G21G-4/00] *** (producing neutrons or other subatomic particles, X- or gamma rays, in fusion reactors DIG. 1+, in nuclear reactors DIG. 5+; in accelerators H05H; X-ray tubes H01J-35/00; gamma masers H01S-4/00)

Current as of: June, 1999
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976 /   HD   NUCLEAR TECHNOLOGY

DIG 403RADIOACTIVE SOURCES [G21G-4/00] *** (producing neutrons or other subatomic particles, X- or gamma rays, in fusion reactors DIG. 1+, in nuclear reactors DIG. 5+; in accelerators H05H; X-ray tubes H01J-35/00; gamma masers H01S-4/00) {2}
DIG 404  DD  .~> Neutron sources [G21G-4/02]
DIG 405  DD  .~> Radioactive sources other than neutron sources [G21G-4/04] {2}