| NL252718A
              (forum.php)
            
            * | 1957-11-14 |  |  |  | 
        
          | US3138004A
              (en)
            
            * | 1962-06-11 | 1964-06-23 | William E Gifford | Entropy balancing method of refrigeration and apparatus therefor | 
        
          | NL281459A
              (forum.php)
            
            * | 1962-07-26 | 1900-01-01 |  |  | 
        
          | US3115016A
              (en)
            
            * | 1962-07-30 | 1963-12-24 | Little Inc A | Refrigeration method and apparatus | 
        
          | US3115015A
              (en)
            
            * | 1962-07-30 | 1963-12-24 | Little Inc A | Refrigeration apparatus and method | 
        
          | NL298732A
              (forum.php)
            
            * | 1962-11-30 |  |  |  | 
        
          | US3147600A
              (en)
            
            * | 1963-06-19 | 1964-09-08 | Malaker Lab Inc | Multi-stage cryogenic engine | 
        
          | FR1388726A
              (fr)
            
            * | 1963-10-14 | 1965-02-12 | Air Liquide | Procédé de maintien sous vide d'une enceinte | 
        
          | US3188820A
              (en)
            
            * | 1963-11-12 | 1965-06-15 | Little Inc A | Fluid expansion refrigeration apparatus | 
        
          | GB1050270A
              (forum.php)
            
            * | 1963-11-12 |  |  |  | 
        
          | US3188818A
              (en)
            
            * | 1963-11-12 | 1965-06-15 | Little Inc A | Refrigeration method and apparatus embodying fluid expansion | 
        
          | US3221509A
              (en)
            
            * | 1964-01-16 | 1965-12-07 | Ibm | Refrigeration method and apparatus | 
        
          | US3274795A
              (en)
            
            * | 1964-04-30 | 1966-09-27 | Little Inc A | Fluid operating apparatus | 
        
          | US3299646A
              (en)
            
            * | 1964-06-17 | 1967-01-24 | Little Inc A | Cryogenic joule-thomson helium liquefier with cascade helium and nitrogen refrigeration circuits | 
        
          | US3218815A
              (en)
            
            * | 1964-06-17 | 1965-11-23 | Little Inc A | Cryogenic refrigeration apparatus operating on an expansible fluid and embodying a regenerator | 
        
          | US3274786A
              (en)
            
            * | 1964-07-27 | 1966-09-27 | Little Inc A | Cryogenic refrigeration method and apparatus operating on an expansible fluid | 
        
          | US3260055A
              (en)
            
            * | 1965-05-04 | 1966-07-12 | James E Webb | Automatic thermal switch | 
        
          | US3692099A
              (en)
            
            * | 1968-06-20 | 1972-09-19 | Gen Electric | Ultra low temperature thermal regenerator | 
        
          | US3620029A
              (en)
            
            * | 1969-10-20 | 1971-11-16 | Air Prod & Chem | Refrigeration method and apparatus | 
        
          | US3625015A
              (en)
            
            * | 1970-04-02 | 1971-12-07 | Cryogenic Technology Inc | Rotary-valved cryogenic apparatus | 
        
          | US3741520A
              (en)
            
            * | 1970-04-13 | 1973-06-26 | Philips Corp | Bellows sealed shutoff valve | 
        
          | US3913339A
              (en)
            
            * | 1974-03-04 | 1975-10-21 | Hughes Aircraft Co | Reduction in cooldown time for cryogenic refrigerator | 
        
          | JPS5644555A
              (en)
            
            * | 1979-09-17 | 1981-04-23 | Aisin Seiki | Refrigerating system | 
        
          | US4333755A
              (en)
            
            * | 1979-10-29 | 1982-06-08 | Oerlikon-Buhrle U.S.A. Inc. | Cryogenic apparatus | 
        
          | US4294600A
              (en)
            
            * | 1979-10-29 | 1981-10-13 | Oerlikon-Buhrle U.S.A. Inc. | Valves for cryogenic refrigerators | 
        
          | US4294077A
              (en)
            
            * | 1979-10-29 | 1981-10-13 | Oerlikon-Buhrle U.S.A. Inc. | Cryogenic refrigerator with dual control valves | 
        
          | US4310337A
              (en)
            
            * | 1979-10-29 | 1982-01-12 | Oerlikon-Buhrle U.S.A. Inc. | Cryogenic apparatus | 
        
          | US4305741A
              (en)
            
            * | 1979-10-29 | 1981-12-15 | Oerlikon-Buhrle U.S.A. Inc. | Cryogenic apparatus | 
        
          | DE3044427C2
              (de)
            
            * | 1980-11-26 | 1986-10-30 | Leybold-Heraeus GmbH, 5000 Köln | Verdränger für Tieftemperatur-Kältemaschinen | 
        
          | US4339927A
              (en)
            
            * | 1981-07-06 | 1982-07-20 | Oerlikon-Burhle U.S.A. Inc. | Gas-driven fluid flow control valve and cryopump incorporating the same | 
        
          | JPS5847970A
              (ja)
            
            * | 1981-09-14 | 1983-03-19 | 住友重機械工業株式会社 | ガス駆動型冷凍機 | 
        
          | US4372128A
              (en)
            
            * | 1981-11-02 | 1983-02-08 | Oerlikon-Buhrle U.S.A. Inc. | In-line cryogenic refrigeration apparatus operating on the Stirling cycle | 
        
          | DE3201496A1
              (de)
            
            * | 1982-01-20 | 1983-07-28 | Leybold-Heraeus GmbH, 5000 Köln | Refrigerator | 
        
          | US4388809A
              (en)
            
            * | 1982-04-19 | 1983-06-21 | Cvi Incorporated | Cryogenic refrigerator | 
        
          | US4391103A
              (en)
            
            * | 1982-04-19 | 1983-07-05 | Cvi Incorporated | Fluidic cryogenic refrigerator | 
        
          | US4389850A
              (en)
            
            * | 1982-04-19 | 1983-06-28 | Cvi Incorporated | Hybrid cryogenic refrigerator | 
        
          | US4490983A
              (en)
            
            * | 1983-09-29 | 1985-01-01 | Cryomech Inc. | Regenerator apparatus for use in a cryogenic refrigerator | 
        
          | US4520630A
              (en)
            
            * | 1984-03-06 | 1985-06-04 | Cvi Incorporated | Cryogenic refrigerator and heat source | 
        
          | US4524586A
              (en)
            
            * | 1984-04-09 | 1985-06-25 | Cvi Incorporated | Cryogenic refrigerator | 
        
          | DE8411307U1
              (de)
            
            * | 1984-04-11 | 1984-07-05 | Leybold-Heraeus GmbH, 5000 Köln | Kaeltemaschine | 
        
          | US4522033A
              (en)
            
            * | 1984-07-02 | 1985-06-11 | Cvi Incorporated | Cryogenic refrigerator with gas spring loaded valve | 
        
          | DE3570726D1
              (en)
            
            * | 1985-09-02 | 1989-07-06 | Leybold Ag | Sealing arrangement for a refrigerator displacement compressor | 
        
          | JPS62116867A
              (ja)
            
            * | 1985-11-16 | 1987-05-28 | アイシン精機株式会社 | 冷凍装置 | 
        
          | US4793153A
              (en)
            
            * | 1987-06-12 | 1988-12-27 | Recovery Engineering, Inc. | Energy recovery apparatus | 
        
          | US4848092A
              (en)
            
            * | 1987-10-02 | 1989-07-18 | Gifford Peter E | Heat exchanger for cryogenic refrigerator | 
        
          | JP2766335B2
              (ja)
            
            * | 1989-09-20 | 1998-06-18 | 株式会社東芝 | 極低温冷凍機 | 
        
          | US5113663A
              (en)
            
            * | 1991-03-11 | 1992-05-19 | Cryomech, Inc. | Multi-stage cryogenic refrigerator | 
        
          | US5323615A
              (en)
            
            * | 1993-05-07 | 1994-06-28 | Glans Eric R | Cryogenic cooler | 
        
          | NL9401251A
              (nl)
            
            * | 1994-08-01 | 1996-03-01 | Hollandse Signaalapparaten Bv | Stirling-koeler. | 
        
          | DE19510620A1
              (de)
            
            * | 1995-03-23 | 1996-09-26 | Leybold Ag | Refrigerator | 
        
          | US5735127A
              (en)
            
            * | 1995-06-28 | 1998-04-07 | Wisconsin Alumni Research Foundation | Cryogenic cooling apparatus with voltage isolation | 
        
          | DE19547030A1
              (de)
            
            * | 1995-12-15 | 1997-06-19 | Leybold Ag | Tieftemperatur-Refrigerator mit einem Kaltkopf sowie Verfahren zur Optimierung des Kaltkopfes für einen gewünschten Temperaturbereich | 
        
          | US6205791B1
              (en)
            
            * | 1999-07-06 | 2001-03-27 | Massachusetts Institute Of Technology | High efficiency modular cryocooler with floating piston expander | 
        
          | US6256997B1
              (en) | 2000-02-15 | 2001-07-10 | Intermagnetics General Corporation | Reduced vibration cooling device having pneumatically-driven GM type displacer | 
        
          | DE10229311A1
              (de) | 2002-06-29 | 2004-01-29 | Leybold Vakuum Gmbh | Refrigerator mit Regenerator | 
        
          | JP4240932B2
              (ja)
            
            * | 2002-07-15 | 2009-03-18 | サイバーレーザー株式会社 | ヘリウム循環冷却レーザ装置 | 
        
          | JP5095417B2
              (ja) | 2005-01-13 | 2012-12-12 | 住友重機械工業株式会社 | 入力電力が低減された極低温冷凍機 | 
        
          | US20070234719A1
              (en)
            
            * | 2006-04-06 | 2007-10-11 | Alexander Schuster | Energy conversion device and operation method thereof | 
        
          | US7674099B2
              (en)
            
            * | 2006-04-28 | 2010-03-09 | Sumitomo Heavy Industries, Ltd. | Compressor with oil bypass | 
        
          | US8959929B2
              (en)
            
            * | 2006-05-12 | 2015-02-24 | Flir Systems Inc. | Miniaturized gas refrigeration device with two or more thermal regenerator sections | 
        
          | US8187370B2
              (en) | 2006-07-13 | 2012-05-29 | Shi-Apd Cryogenics, Inc. | Horizontal bulk oil separator | 
        
          | TWI585298B
              (zh) | 2008-04-04 | 2017-06-01 | 布魯克機械公司 | 利用錫銻合金的低溫泵及其使用方法 | 
        
          | US8978400B2
              (en)
            
            * | 2009-11-09 | 2015-03-17 | Sumitomo (Shi) Cryogenics Of America Inc. | Air cooled helium compressor | 
        
          | CN102812311B
              (zh)
            
            * | 2010-03-19 | 2015-05-20 | 住友重机械工业株式会社 | 蓄冷器、gm制冷机及脉冲管制冷机 | 
        
          | WO2012016192A2
              (en) | 2010-07-30 | 2012-02-02 | Brooks Automation, Inc. | Multi-refrigerator high speed cryopump | 
        
          | US10240832B2
              (en) | 2015-12-18 | 2019-03-26 | Sumitomo (Shi) Cryogenic Of America, Inc | Helium compressor with dual after-coolers | 
        
          | US11149992B2
              (en) | 2015-12-18 | 2021-10-19 | Sumitomo (Shi) Cryogenic Of America, Inc. | Dual helium compressors | 
        
          | US11209193B2
              (en) | 2018-04-09 | 2021-12-28 | Edwards Vacuum Llc | Pneumatic drive cryocooler | 
        
          | US11913697B1
              (en) | 2020-06-29 | 2024-02-27 | The United States Of America, As Represented By The Secretary Of The Navy | Pneumatically actuated cryocooler | 
        
          | CN119869143B
              (zh)
            
            * | 2025-03-27 | 2025-06-17 | 杭州嘉隆气体设备有限公司 | 鼓风热再生干燥器及其控制方法 |