EP4328284A1 - MAGNETIC COLD STORAGE MATERIAL PARTICLE, COLD STORAGE DEVICE, REFRIGERATING MACHINE, CRYOPUMP, SUPERCONDUCTING MAGNET, NUCLEAR MAGNETIC RESONANCE IMAGING APPARATUS, NUCLEAR MAGNETIC RESONANCE APPARATUS, MAGNETIC-FIELD-APPLICATION-TYPE SINGLE CRYSTAL PULLING APPARATUS, AND HELIUM RE-CONDENSATION APPARATUS | Patent Bear