|
| US4848092 | 2 oct. 1987 | 18 juil. 1989 | | Heat exchanger for cryogenic refrigerator |
| US5265440 | 1 févr. 1993 | 30 nov. 1993 | Skyline Metal Products, Inc. | Temperature control chamber |
| US5317878 | 20 août 1992 | 7 juin 1994 | British Technology Group Ltd. | Cryogenic cooling apparatus |
| US7565809 | 18 sept. 2003 | 28 juil. 2009 | Japan Science and Technology Agency | Circulation-type liquid helium reliquefaction apparatus with contaminant discharge function, method of discharging contaminant from the apparatus, and refiner and transfer tube both of which are used for the apparatus |
