JPS6129747B2 - - Google Patents
Info
- Publication number
- JPS6129747B2 JPS6129747B2 JP55500483A JP50048380A JPS6129747B2 JP S6129747 B2 JPS6129747 B2 JP S6129747B2 JP 55500483 A JP55500483 A JP 55500483A JP 50048380 A JP50048380 A JP 50048380A JP S6129747 B2 JPS6129747 B2 JP S6129747B2
- Authority
- JP
- Japan
- Prior art keywords
- flow
- exhalation
- circuit
- voltage
- signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000003990 capacitor Substances 0.000 description 32
- 239000012530 fluid Substances 0.000 description 27
- 230000004044 response Effects 0.000 description 25
- 239000007789 gas Substances 0.000 description 24
- 230000029058 respiratory gaseous exchange Effects 0.000 description 23
- 239000004020 conductor Substances 0.000 description 22
- 230000006870 function Effects 0.000 description 18
- 238000012937 correction Methods 0.000 description 15
- 230000003434 inspiratory effect Effects 0.000 description 15
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 14
- 239000001301 oxygen Substances 0.000 description 14
- 229910052760 oxygen Inorganic materials 0.000 description 14
- 230000008859 change Effects 0.000 description 10
- 230000001276 controlling effect Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 7
- 238000009423 ventilation Methods 0.000 description 7
- 206010002091 Anaesthesia Diseases 0.000 description 5
- 230000009471 action Effects 0.000 description 5
- 230000004913 activation Effects 0.000 description 5
- 230000037005 anaesthesia Effects 0.000 description 5
- 230000010354 integration Effects 0.000 description 5
- 238000004064 recycling Methods 0.000 description 5
- 230000001105 regulatory effect Effects 0.000 description 5
- 230000000007 visual effect Effects 0.000 description 5
- 230000002779 inactivation Effects 0.000 description 4
- 230000036387 respiratory rate Effects 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 230000003213 activating effect Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 229910003460 diamond Inorganic materials 0.000 description 3
- 239000010432 diamond Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000003321 amplification Effects 0.000 description 2
- PNDPGZBMCMUPRI-UHFFFAOYSA-N iodine Chemical compound II PNDPGZBMCMUPRI-UHFFFAOYSA-N 0.000 description 2
- 210000004072 lung Anatomy 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 230000000241 respiratory effect Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 244000025254 Cannabis sativa Species 0.000 description 1
- 235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 description 1
- 235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 description 1
- 241000282412 Homo Species 0.000 description 1
- 206010028813 Nausea Diseases 0.000 description 1
- 241000287462 Phalacrocorax carbo Species 0.000 description 1
- 241000276498 Pollachius virens Species 0.000 description 1
- 206010038669 Respiratory arrest Diseases 0.000 description 1
- 241001425726 Vindula arsinoe Species 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 235000009120 camo Nutrition 0.000 description 1
- 235000005607 chanvre indien Nutrition 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 1
- 239000011487 hemp Substances 0.000 description 1
- 230000000415 inactivating effect Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 230000008693 nausea Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- QHGVXILFMXYDRS-UHFFFAOYSA-N pyraclofos Chemical compound C1=C(OP(=O)(OCC)SCCC)C=NN1C1=CC=C(Cl)C=C1 QHGVXILFMXYDRS-UHFFFAOYSA-N 0.000 description 1
- 210000002345 respiratory system Anatomy 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 210000002784 stomach Anatomy 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
- A61M16/0057—Pumps therefor
- A61M16/0081—Bag or bellow in a bottle
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
- A61M16/0051—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes with alarm devices
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
- A61M16/021—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes operated by electrical means
- A61M16/022—Control means therefor
- A61M16/024—Control means therefor including calculation means, e.g. using a processor
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
- A61M16/0096—High frequency jet ventilation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/8593—Systems
- Y10T137/87265—Dividing into parallel flow paths with recombining
- Y10T137/87298—Having digital flow controller
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Public Health (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Pulmonology (AREA)
- Animal Behavior & Ethology (AREA)
- Hematology (AREA)
- General Health & Medical Sciences (AREA)
- Emergency Medicine (AREA)
- Veterinary Medicine (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
- Measuring Volume Flow (AREA)
- Flow Control (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US06/011,636 US4256100A (en) | 1979-02-12 | 1979-02-12 | Flow control equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56500199A JPS56500199A (en]) | 1981-02-26 |
| JPS6129747B2 true JPS6129747B2 (en]) | 1986-07-09 |
Family
ID=21751323
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55500483A Expired JPS6129747B2 (en]) | 1979-02-12 | 1980-01-31 |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US4256100A (en]) |
| EP (1) | EP0023910B1 (en]) |
| JP (1) | JPS6129747B2 (en]) |
| CA (1) | CA1154348A (en]) |
| GB (1) | GB2053002B (en]) |
| NL (1) | NL8020050A (en]) |
| WO (1) | WO1980001646A1 (en]) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0213550U (en]) * | 1988-03-16 | 1990-01-29 |
Families Citing this family (63)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4340044A (en) * | 1980-03-20 | 1982-07-20 | Berkshire Research Partners | Volume ventilator |
| SE430213B (sv) * | 1981-03-10 | 1983-10-31 | Siemens Elema Ab | Respirator, avsedd att anslutas till andningsvegarna pa menniska eller djur |
| US4478246A (en) * | 1981-08-10 | 1984-10-23 | Donnell Sherrod | Method and apparatus for proportioning of fuel usage by a fluid fueled apparatus |
| US4565207A (en) * | 1981-08-10 | 1986-01-21 | Donnell Sherrod | Method for proportioning fuel usage by a fluid fueled apparatus |
| US4448192A (en) * | 1982-03-05 | 1984-05-15 | Hewlett Packard Company | Medical ventilator device parametrically controlled for patient ventilation |
| DE3209413A1 (de) * | 1982-03-16 | 1983-09-22 | Carl A. Hoyer, Medizin-Technik, 2800 Bremen | Vorrichtung zur hochfrequenten maschinellen beatmung |
| US4803977A (en) * | 1982-03-25 | 1989-02-14 | Mallinckrodt, Inc. | Method and apparatus for the diagnosis of respiratory diseases and allergies |
| US4660547A (en) * | 1982-03-25 | 1987-04-28 | Mallinckrodt, Inc. | Method and apparatus for the diagnosis of respiratory diseases and allergies |
| US4637385A (en) * | 1986-01-13 | 1987-01-20 | Tibor Rusz | Pulmonary ventilator controller |
| FR2593299A1 (fr) * | 1986-01-20 | 1987-07-24 | Sfim | Systeme de commande de debit de fluide programmable et son utilisation dans les systemes respirateurs |
| EP0282675A3 (en) * | 1986-11-04 | 1990-01-03 | Bird Products Corporation | Flow control valve for a medical ventilator |
| US5474062A (en) * | 1987-11-04 | 1995-12-12 | Bird Products Corporation | Medical ventilator |
| US4883051A (en) * | 1988-02-18 | 1989-11-28 | Summa Vest, Inc. | Disposable breathing system and components |
| DE3900276A1 (de) * | 1989-01-07 | 1990-07-12 | Draegerwerk Ag | Beatmungsgeraet mit atemkreislauf und gesteuerter frischgaszufuhr |
| US5038771A (en) * | 1990-01-25 | 1991-08-13 | Dietz Henry G | Method and apparatus for respiratory therapy using intermittent flow having automatic adjustment of a dose of therapeutic gas to the rate of breathing |
| FI92286C (fi) * | 1992-02-21 | 1994-10-25 | Instrumentarium Oy | Laitteisto potilaalle hengitysjakson aikana toimitetun kaasutilavuuden säätämiseksi |
| DE9303693U1 (de) * | 1993-03-12 | 1993-04-29 | Siemens AG, 8000 München | Gasmischeinrichtung |
| EP0645119A3 (en) * | 1993-09-27 | 1998-04-15 | Ohmeda Inc. | Disabling apnoea volume software |
| FI95442C (fi) * | 1994-06-21 | 1996-02-12 | Instrumentarium Oy | Sovitelma ventilaattorin yhteydessä |
| ATE407716T1 (de) * | 1994-10-14 | 2008-09-15 | Bird Products Corp | Tragbares, mechanisches und mit einem umlaufverdichter angetriebenes beatmungsgerät |
| US5664563A (en) * | 1994-12-09 | 1997-09-09 | Cardiopulmonary Corporation | Pneumatic system |
| GB9511651D0 (en) * | 1995-06-08 | 1995-08-02 | Univ Wales Medicine | Blood Volume Measurement |
| US6463930B2 (en) * | 1995-12-08 | 2002-10-15 | James W. Biondi | System for automatically weaning a patient from a ventilator, and method thereof |
| US6158432A (en) * | 1995-12-08 | 2000-12-12 | Cardiopulmonary Corporation | Ventilator control system and method |
| US6158434A (en) * | 1996-02-27 | 2000-12-12 | Henk W. Koster | Ventilatory system with additional gas administrator |
| ES2142195B1 (es) * | 1996-05-10 | 2000-11-01 | Hernandez Abadia De Barbara Al | Ventilador mecanico automatico capaz de funcionar adecuadamente en distintos ambientes de presion, especialmente en ambientes de presion extremas. |
| ES2152128B1 (es) * | 1996-05-10 | 2001-08-01 | Abadia De Barbara Al Hernandez | Mejoras introducidas en la patente principal num. 9601063, del ventilador mecanico automatico capaz de funcionar adecuadamente en distintos ambientes de presion, incluso en ambientes de presion extrema. |
| FI974148A7 (fi) * | 1997-11-05 | 1999-05-06 | Instr Oy | Menetelmä ja sovitelma hengityslaitteen yhteydessä |
| DE19914282A1 (de) * | 1999-03-30 | 2000-10-05 | Leybold Vakuum Gmbh | Sperrgas-Ventileinrichtung |
| US6135967A (en) * | 1999-04-26 | 2000-10-24 | Fiorenza; Anthony Joseph | Respiratory ventilator with automatic flow calibration |
| US6240919B1 (en) | 1999-06-07 | 2001-06-05 | Macdonald John J. | Method for providing respiratory airway support pressure |
| US6962155B1 (en) * | 1999-07-30 | 2005-11-08 | Universite De Montreal | Target drive ventilation gain controller and method |
| US6240959B1 (en) * | 1999-12-30 | 2001-06-05 | Donald M. Loper | Hydraulic safety fuse device |
| US6976489B2 (en) | 2000-06-30 | 2005-12-20 | Northgate Technologies, Inc. | Method and apparatus for humidification and warming of air |
| DE10205845C1 (de) * | 2002-02-13 | 2002-10-31 | Draeger Medical Ag | Gasmischer mit mehreren Ejektoren für ein medizinisches Beatmungsgerät |
| AU2003291545A1 (en) * | 2002-11-15 | 2004-06-15 | Graymills Corporation | System and method for delivering and flushing ink and other liquids in a printing press |
| WO2006122231A2 (en) * | 2005-05-10 | 2006-11-16 | Nspire Health, Inc. | Method and apparatus for analyzing pulmonary performance |
| EP1772098B1 (en) * | 2005-10-10 | 2014-02-26 | CareFusion Germany 234 GmbH | Measuring head for diagnostic instruments and method |
| JP4814706B2 (ja) * | 2006-06-27 | 2011-11-16 | 株式会社フジキン | 流量比可変型流体供給装置 |
| US8211052B1 (en) | 2006-07-13 | 2012-07-03 | Lexion Medical Llc | Charged hydrator |
| US20080202520A1 (en) * | 2007-02-23 | 2008-08-28 | General Electric Company | Setting mandatory mechanical ventilation parameters based on patient physiology |
| US20080202521A1 (en) * | 2007-02-23 | 2008-08-28 | General Electric Company | Setting mandatory mechanical ventilation parameters based on patient physiology |
| US20080202518A1 (en) * | 2007-02-23 | 2008-08-28 | General Electric Company | Setting mandatory mechanical ventilation parameters based on patient physiology |
| US20080202519A1 (en) * | 2007-02-23 | 2008-08-28 | General Electric Company | Setting mandatory mechanical ventilation parameters based on patient physiology |
| US20080202517A1 (en) * | 2007-02-23 | 2008-08-28 | General Electric Company | Setting madatory mechanical ventilation parameters based on patient physiology |
| US20080230064A1 (en) * | 2007-03-23 | 2008-09-25 | General Electric Company | Setting inspiratory time in mandatory mechanical ventilation based on patient physiology, such as when forced inhalation flow ceases |
| US20080230063A1 (en) * | 2007-03-23 | 2008-09-25 | General Electric Company | Setting inspiratory time in mandatory mechanical ventilation based on patient physiology, such as forced inhalation time |
| US20080230060A1 (en) * | 2007-03-23 | 2008-09-25 | General Electric Company | Setting inspiratory time in mandatory mechanical ventilation based on patient physiology, such as when tidal volume is inspired |
| US20080230061A1 (en) * | 2007-03-23 | 2008-09-25 | General Electric Company | Setting expiratory time in mandatory mechanical ventilation based on a deviation from a stable condition of end tidal gas concentrations |
| US8656913B2 (en) * | 2007-06-05 | 2014-02-25 | Allied Healthcare Products, Inc. | Ventilator apparatus |
| EP2259823A1 (en) * | 2008-03-31 | 2010-12-15 | Nellcor Puritan Bennett LLC | Ventilator based on a fluid equivalent of the "digital to analog voltage" concept |
| CN101301503B (zh) * | 2008-06-26 | 2010-06-02 | 上海力申科学仪器有限公司 | 麻醉机潮气量的自动标定方法 |
| US9283339B2 (en) * | 2009-05-18 | 2016-03-15 | Zoll Medical Corporation | Life support and monitoring apparatus with malfunction correction guidance |
| GB0908523D0 (en) * | 2009-05-19 | 2009-06-24 | Art Of Xen Ltd | Ventilator apparatus |
| DE102012017207A1 (de) * | 2012-08-31 | 2014-03-06 | Robert Bosch Gmbh | Verfahren zum Ansteuern einer hydraulischen Ventilanordnung und hydraulische Ventilanordnung |
| US8631790B1 (en) * | 2012-11-30 | 2014-01-21 | Christopher A. Di Capua | Automated ventilator with assisted compressions |
| US10036568B2 (en) | 2013-03-15 | 2018-07-31 | Trane International, Inc. | Fluid flow measurement and control |
| CN104759043B (zh) * | 2015-04-07 | 2017-12-26 | 杨彬 | 一种便携式的智能呼吸机及其智能调控系统 |
| CN106730195B (zh) * | 2016-11-29 | 2019-04-30 | 湖南水口山有色金属集团有限公司 | 一种呼吸机通气控制电路 |
| CA3007070A1 (en) | 2017-06-01 | 2018-12-01 | Nspire Health, Inc. | Apparatus and methods for calibrating and/or validating pulmonary function test equipment |
| CN107376080A (zh) * | 2017-08-03 | 2017-11-24 | 张乙莲 | 一种麻醉科专用的麻醉机 |
| US11567549B2 (en) * | 2019-05-31 | 2023-01-31 | Texas Instruments Incorporated | Reset circuit for battery management system |
| US20220062577A1 (en) * | 2020-08-27 | 2022-03-03 | Kelly Pneumatics, Inc. | Ventilator assembly and mixing system therefor |
Family Cites Families (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3033195A (en) * | 1957-09-16 | 1962-05-08 | Air Reduction | Respirator apparatus and method |
| US3072146A (en) * | 1959-09-24 | 1963-01-08 | Gizeski Terrence | Digital regulator valve |
| US3741208A (en) * | 1971-02-23 | 1973-06-26 | B Jonsson | Lung ventilator |
| US3726296A (en) * | 1971-08-09 | 1973-04-10 | Process Systems | Fluidic control system and method for calibrating same |
| US3921628A (en) * | 1971-08-19 | 1975-11-25 | Philips Corp | Medical ventilators |
| US4036221A (en) * | 1972-05-01 | 1977-07-19 | Sutter Hospitals Medical Research Foundation | Respirator |
| US3840006A (en) * | 1973-04-26 | 1974-10-08 | Department Of Health Education | Respirator |
| US3827457A (en) * | 1973-06-22 | 1974-08-06 | Westinghouse Air Brake Co | Fluid pressure system for converting digital signals to analog signals |
| US3905363A (en) * | 1973-11-19 | 1975-09-16 | Ram Research Inc | Dual mode fluidic ventilator |
| USRE29383E (en) * | 1974-01-10 | 1977-09-06 | Process Systems, Inc. | Digital fluid flow rate measurement or control system |
| US3942553A (en) * | 1974-01-10 | 1976-03-09 | Process Systems, Inc. | Digital fluid flow control system with trim adjustment |
| US4001700A (en) * | 1974-04-16 | 1977-01-04 | Sutter Hospitals Medical Research Foundation | Digital waveform generator for automatic respiratory ventilators |
| SE435017B (sv) * | 1976-10-26 | 1984-09-03 | Puritan Bennett Corp | Lungventilator |
| US4134423A (en) * | 1977-09-01 | 1979-01-16 | Suntech, Inc. | Flowrate control means |
| SE409175B (sv) * | 1977-11-29 | 1979-08-06 | Aga Ab | Anordning vid en respirator for metning av till en patient tillford gasmengd |
| US4170245A (en) * | 1978-03-03 | 1979-10-09 | Fmc Corporation | Digital control valve |
| IT1096151B (it) * | 1978-03-16 | 1985-08-17 | Savelli Aulo | Respiratore artificiale automatico,in particolare per sale di rianimazione e per anestesia |
-
1979
- 1979-02-12 US US06/011,636 patent/US4256100A/en not_active Expired - Lifetime
-
1980
- 1980-01-31 WO PCT/US1980/000091 patent/WO1980001646A1/en not_active Application Discontinuation
- 1980-01-31 JP JP55500483A patent/JPS6129747B2/ja not_active Expired
- 1980-01-31 NL NL8020050A patent/NL8020050A/nl not_active Application Discontinuation
- 1980-01-31 GB GB8032891A patent/GB2053002B/en not_active Expired
- 1980-02-08 CA CA000345286A patent/CA1154348A/en not_active Expired
- 1980-08-25 EP EP80900358A patent/EP0023910B1/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0213550U (en]) * | 1988-03-16 | 1990-01-29 |
Also Published As
| Publication number | Publication date |
|---|---|
| CA1154348A (en) | 1983-09-27 |
| US4256100A (en) | 1981-03-17 |
| JPS56500199A (en]) | 1981-02-26 |
| EP0023910B1 (en) | 1984-05-23 |
| WO1980001646A1 (en) | 1980-08-21 |
| GB2053002B (en) | 1983-06-15 |
| EP0023910A1 (en) | 1981-02-18 |
| NL8020050A (nl) | 1980-11-28 |
| EP0023910A4 (en) | 1981-10-27 |
| GB2053002A (en) | 1981-02-04 |
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