JPS577551A - Electrochemical measuring feeler for measuring oxygen content in gas and production of electrochemical measuring feeler sensor element - Google Patents
Electrochemical measuring feeler for measuring oxygen content in gas and production of electrochemical measuring feeler sensor elementInfo
- Publication number
- JPS577551A JPS577551A JP6946681A JP6946681A JPS577551A JP S577551 A JPS577551 A JP S577551A JP 6946681 A JP6946681 A JP 6946681A JP 6946681 A JP6946681 A JP 6946681A JP S577551 A JPS577551 A JP S577551A
- Authority
- JP
- Japan
- Prior art keywords
- measuring
- feeler
- electrochemical
- electrochemical measuring
- gas
- 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.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/403—Cells and electrode assemblies
- G01N27/406—Cells and probes with solid electrolytes
- G01N27/407—Cells and probes with solid electrolytes for investigating or analysing gases
- G01N27/4071—Cells and probes with solid electrolytes for investigating or analysing gases using sensor elements of laminated structure
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Molecular Biology (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Measuring Oxygen Concentration In Cells (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3017947A DE3017947A1 (de) | 1980-05-10 | 1980-05-10 | Elektrochemischer messfuehler fuer die bestimmung des sauerstoffgehaltes in gasen und verfahren zum herstellen von sensorelementen fuer derartige messfuehler |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS577551A true JPS577551A (en) | 1982-01-14 |
JPH0128906B2 JPH0128906B2 (ja) | 1989-06-06 |
Family
ID=6102067
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6946681A Granted JPS577551A (en) | 1980-05-10 | 1981-05-11 | Electrochemical measuring feeler for measuring oxygen content in gas and production of electrochemical measuring feeler sensor element |
Country Status (8)
Country | Link |
---|---|
US (1) | US4502939A (ja) |
JP (1) | JPS577551A (ja) |
CA (1) | CA1167527A (ja) |
DE (1) | DE3017947A1 (ja) |
FR (1) | FR2482307A1 (ja) |
GB (1) | GB2075690B (ja) |
IT (1) | IT1138323B (ja) |
SE (1) | SE452913B (ja) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57201847A (en) * | 1981-06-08 | 1982-12-10 | Toyota Motor Corp | Lean sensor |
JPS60114762A (ja) * | 1983-11-28 | 1985-06-21 | Hitachi Ltd | 酸素濃度測定装置の製造方法 |
JPS613052A (ja) * | 1984-06-16 | 1986-01-09 | Ngk Spark Plug Co Ltd | 酸素センサ−の検出基板 |
JPS6252450A (ja) * | 1985-08-30 | 1987-03-07 | Ngk Insulators Ltd | 電気化学的素子及びその製造方法 |
JPS6363963A (ja) * | 1986-09-04 | 1988-03-22 | Ngk Insulators Ltd | 工業用ガス濃度測定装置 |
Families Citing this family (97)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3206903A1 (de) * | 1982-02-26 | 1983-09-15 | Bosch Gmbh Robert | Gassensor, insbesondere fuer abgase von brennkraftmaschinen |
JPS6036949A (ja) * | 1983-08-09 | 1985-02-26 | Ngk Insulators Ltd | 酸素センサ素子 |
JPS6091248A (ja) * | 1983-10-26 | 1985-05-22 | Ngk Spark Plug Co Ltd | ガス成分検出栓 |
DE3405162A1 (de) * | 1984-02-14 | 1985-08-22 | Bosch Gmbh Robert | Polarographischer sauerstoffmessfuehler |
CA1223641A (en) * | 1984-03-05 | 1987-06-30 | Olivier De Pous | Device for generating an electric signal linearly dependent upon the oxygen content of a gaseous mixture |
JP2502961B2 (ja) * | 1984-04-26 | 1996-05-29 | 日本碍子株式会社 | 電気化学的装置の製造方法 |
US5110442A (en) * | 1984-06-27 | 1992-05-05 | Ngk Spark Plug Co., Ltd. | Reinforced electrolyte function elements |
JPS6114187A (ja) * | 1984-06-27 | 1986-01-22 | 日本特殊陶業株式会社 | 補強板状焼結体 |
US4784743A (en) * | 1984-12-06 | 1988-11-15 | Ngk Insulators, Ltd. | Oxygen sensor |
US5194135A (en) * | 1985-02-25 | 1993-03-16 | Ngk Spark Plug Co., Ltd. | Air/fuel ratio sensor |
US5242573A (en) * | 1985-02-25 | 1993-09-07 | Ngk Spark Plug Co., Ltd. | Method of making air/fuel ratio sensor |
JPS61195338A (ja) * | 1985-02-25 | 1986-08-29 | Ngk Spark Plug Co Ltd | 空燃比センサ− |
DE3513761A1 (de) * | 1985-04-17 | 1986-10-23 | Bayer Diagnostic & Electronic | Elektrochemischer messfuehler |
GB2183042B (en) * | 1985-09-27 | 1989-09-20 | Ngk Spark Plug Co | Air/fuel ratio sensor |
DE3578216D1 (de) * | 1985-10-01 | 1990-07-19 | Honda Motor Co Ltd | Verfahren und vorrichtung fuer die bestimmung von sauerstoff in gasen. |
JPH0668483B2 (ja) * | 1985-10-26 | 1994-08-31 | 日本碍子株式会社 | 電気化学的装置 |
JPH0664009B2 (ja) * | 1986-03-28 | 1994-08-22 | 日本碍子株式会社 | ガスセンサ−素子 |
JPH0810211B2 (ja) * | 1986-09-05 | 1996-01-31 | 日本碍子株式会社 | ガスセンサ及びその製造法 |
DE3733192C1 (de) * | 1987-10-01 | 1988-10-06 | Bosch Gmbh Robert | PTC-Temperaturfuehler sowie Verfahren zur Herstellung von PTC-Temperaturfuehlerelementen fuer den PTC-Temperaturfuehler |
DE3728289C1 (de) * | 1987-08-25 | 1988-08-04 | Bosch Gmbh Robert | Nach dem polarographischen Messprinzip arbeitende Grenzstromsonde |
FR2621126B1 (fr) * | 1987-09-25 | 1994-04-15 | Thomson Csf | Capteur electrochimique, a structure integree, de mesure de concentrations relatives d'especes reactives |
US4915814A (en) * | 1987-09-30 | 1990-04-10 | Hitachi, Ltd. | Sensor for measurement of air/fuel ratio and method of manufacturing |
US4931354A (en) * | 1987-11-02 | 1990-06-05 | Murata Manufacturing Co., Ltd. | Multilayer printed circuit board |
JPH01213564A (ja) * | 1988-02-23 | 1989-08-28 | Japan Gore Tex Inc | 感湿素子およびその製造法 |
US5389223A (en) * | 1988-07-23 | 1995-02-14 | Robert Bosch Gmbh | Electrochemical measuring sensor |
US5145566A (en) * | 1988-09-30 | 1992-09-08 | Ford Motor Company | Method for determining relative amount of oxygen containing gas in a gas mixture |
DE3833541C1 (ja) * | 1988-10-01 | 1990-03-22 | Robert Bosch Gmbh, 7000 Stuttgart, De | |
DE68917856T2 (de) * | 1988-10-31 | 1995-04-06 | Fujikura Ltd | Sauerstoffsensorvorrichtung. |
EP0369238B1 (en) * | 1988-11-01 | 1996-09-04 | Ngk Spark Plug Co., Ltd | Oxygen sensor and method for producing same |
US5186809A (en) * | 1988-11-02 | 1993-02-16 | Ngk Spark Plug Co., Ltd. | Structure for joining a wire to a solid electrolytic element |
DE68928441T2 (de) * | 1988-11-29 | 1998-03-12 | Ngk Spark Plug Co | Ein Feuchtigkeitssensor unter Verwendung einer elektrochemischen Zelle |
DE3841611A1 (de) * | 1988-12-10 | 1990-06-13 | Bosch Gmbh Robert | Sensorelement fuer grenzstromsensoren zur bestimmung des (lambda)-wertes von gasgemischen |
US5389218A (en) * | 1989-01-24 | 1995-02-14 | Gas Research Institute | Process for operating a solid-state oxygen microsensor |
US5389225A (en) * | 1989-01-24 | 1995-02-14 | Gas Research Institute | Solid-state oxygen microsensor and thin structure therefor |
DE3908393A1 (de) * | 1989-03-15 | 1990-09-27 | Bosch Gmbh Robert | Sensorelement fuer grenzstromsensoren zur bestimmung des (lambda)-wertes von gasgemischen |
JPH03130657A (ja) * | 1989-10-17 | 1991-06-04 | Tokuyama Soda Co Ltd | 酸素センサ |
US5486279A (en) * | 1989-10-17 | 1996-01-23 | Robert Bosch Gmbh | Electrochemical measuring probe |
US5662786A (en) * | 1990-03-19 | 1997-09-02 | Robert Bosch Gmbh | Electrochemical sensor |
JP2786507B2 (ja) * | 1990-03-22 | 1998-08-13 | 日本碍子株式会社 | 酸素センサ |
DE4025715C1 (ja) * | 1990-08-14 | 1992-04-02 | Robert Bosch Gmbh, 7000 Stuttgart, De | |
EP0506897B1 (de) * | 1990-10-26 | 1995-12-06 | Robert Bosch Gmbh | Gasmessfühler, insbesondere zur bestimmung des sauerstoffgehaltes in abgasen von brennkraftmaschinen |
DE4318107A1 (de) * | 1993-06-01 | 1994-12-08 | Bosch Gmbh Robert | Meßfühleranordnung in einer Gasleitung |
WO1994029709A1 (en) * | 1993-06-04 | 1994-12-22 | Dalhousie University | Gas detection, identification and elemental and quantitative analysis system |
DE4333231A1 (de) * | 1993-09-30 | 1995-04-06 | Bosch Gmbh Robert | Verfahren zum Betrieb einer Sauerstoffsonde mit interner Referenzatmosphäre |
WO1995014226A1 (en) * | 1993-11-19 | 1995-05-26 | Ceramatec, Inc. | Multi-functional sensor for combustion systems |
GB9401634D0 (en) * | 1994-01-28 | 1994-03-23 | City Tech | Monitor |
DE4415938C2 (de) * | 1994-05-05 | 2000-02-24 | Heraeus Electro Nite Int | Gassensor |
CA2169350A1 (en) * | 1994-06-13 | 1995-12-21 | Mitsui Chemicals, Incorporated | Lithium ionic conducting glass thin film and carbon dioxide sensor comprising the glass thin film |
US6143165A (en) * | 1994-07-28 | 2000-11-07 | Kabushiki Kaisha Riken | Nox sensor |
US5709787A (en) * | 1994-09-30 | 1998-01-20 | Samsung Electro-Mechanics Co., Ltd. | Wide-range air fuel ratio oxygen sensor |
US5879526A (en) * | 1994-11-08 | 1999-03-09 | Robert Bosch Gmbh | Electrochemical measuring sensor for determining nitrogen oxides in gas mixtures |
JPH08201338A (ja) * | 1995-01-23 | 1996-08-09 | Nippondenso Co Ltd | 酸素濃度検出器 |
JP3524980B2 (ja) * | 1995-03-10 | 2004-05-10 | 株式会社リケン | 窒素酸化物センサ |
GB9512929D0 (en) * | 1995-06-24 | 1995-08-30 | Sun Electric Uk Ltd | Multi-gas sensor systems for automatic emissions measurement |
US6346510B1 (en) * | 1995-10-23 | 2002-02-12 | The Children's Medical Center Corporation | Therapeutic antiangiogenic endostatin compositions |
JP3624498B2 (ja) * | 1995-10-27 | 2005-03-02 | 株式会社デンソー | 空燃比センサ |
DE19549287A1 (de) * | 1995-12-22 | 1997-06-26 | Siemens Ag | Elektrischer Anschluß für einen Sensor im Hochtemperaturbereich |
DE19549283A1 (de) * | 1995-12-22 | 1997-06-26 | Siemens Ag | Im Hochtemperaturbereich verwendbarer Sensor |
DE19703636B4 (de) * | 1996-01-31 | 2008-03-20 | Denso Corp., Kariya | Luft/Kraftstoff-Verhältnis-Meßelement und Luft/Kraftstoff-Verhältnis-Detektor mit einem Luft/Kraftstoff-Verhältnis-Meßelement |
JP3537628B2 (ja) * | 1996-05-16 | 2004-06-14 | 日本碍子株式会社 | 窒素酸化物の測定方法 |
DE59712916D1 (de) * | 1996-11-06 | 2008-03-20 | Bosch Gmbh Robert | Elektrochemischer messfühler |
JP3694377B2 (ja) * | 1996-11-29 | 2005-09-14 | 日本特殊陶業株式会社 | 酸素センサ及び空燃比検出方法 |
JPH10239276A (ja) * | 1996-12-27 | 1998-09-11 | Ngk Insulators Ltd | 一酸化炭素ガスセンサおよび同センサを用いた測定装置 |
DE69837023T2 (de) * | 1997-03-28 | 2007-11-22 | NGK Spark Plug Co., Ltd., Nagoya | NOx Sensor |
EP0987545A1 (de) * | 1997-09-15 | 2000-03-22 | Heraeus Electro-Nite International N.V. | Röhrchenförmiger Gassensor mit aufgedruckten Sensor- und Heizflächen |
EP0938666A1 (de) * | 1997-09-15 | 1999-09-01 | Heraeus Electro-Nite International N.V. | Gassensor |
DE19757112C2 (de) | 1997-09-15 | 2001-01-11 | Heraeus Electro Nite Int | Gassensor |
JP3878339B2 (ja) * | 1997-11-14 | 2007-02-07 | 株式会社リケン | 窒素酸化物センサ |
JP3874947B2 (ja) * | 1997-12-01 | 2007-01-31 | 日本碍子株式会社 | 二酸化硫黄ガスセンサ |
DE19805023A1 (de) * | 1998-02-09 | 1999-08-12 | Bosch Gmbh Robert | Elektrochemischer Meßfühler |
DE19815700B4 (de) * | 1998-04-08 | 2004-01-29 | Robert Bosch Gmbh | Elektrochemisches Sensorelement mit porösem Referenzgasspeicher |
JP3534612B2 (ja) * | 1998-05-18 | 2004-06-07 | 日本特殊陶業株式会社 | 平面型限界電流式センサ |
DE19906908B4 (de) * | 1999-02-19 | 2004-02-19 | Robert Bosch Gmbh | Sensor zur Analyse von Gasen |
US6277256B1 (en) * | 1999-05-17 | 2001-08-21 | The Regents Of The University Of California | Enhanced electrodes for solid state gas sensors |
GB2350684B (en) * | 1999-05-24 | 2003-11-26 | Ford Motor Co | Exhaust gas sensor |
DE19941051C2 (de) * | 1999-08-28 | 2003-10-23 | Bosch Gmbh Robert | Sensorelement zur Bestimmung der Sauerstoffkonzentration in Gasgemischen und Verfahren zur Herstellung desselben |
US6592731B1 (en) * | 1999-09-23 | 2003-07-15 | Ceramphysics, Inc. | Amperometric oxygen sensor |
US6824661B2 (en) | 1999-09-23 | 2004-11-30 | Ceramphysics, Inc. | Combined oxygen and NOx sensor |
US6656336B2 (en) * | 2001-01-25 | 2003-12-02 | The Regents Of The University Of California | Method for forming a potential hydrocarbon sensor with low sensitivity to methane and CO |
AU2002239951A1 (en) * | 2001-01-25 | 2002-08-06 | The Regents Of The University Of California | Hydrocarbon sensor |
DE10115704C1 (de) * | 2001-03-29 | 2002-09-05 | Epiq Sensor Nite N V | Gehäuse für einen Temperatur- oder Gassensor sowie dessen Verwendung |
JP2004198362A (ja) * | 2002-12-20 | 2004-07-15 | Denso Corp | ガスセンサ |
US7211180B2 (en) * | 2003-02-10 | 2007-05-01 | Robert Bosch Corporation | Contamination-resistant gas sensor element |
US20090101502A1 (en) * | 2003-02-10 | 2009-04-23 | Robert Bosch Gmbh | Thermal Shock Resistant Gas Sensor Element |
US8906214B2 (en) * | 2003-02-10 | 2014-12-09 | Robert Bosch Gmbh | Contamination-resistant gas sensor element |
DE102004060867B4 (de) * | 2003-12-18 | 2008-06-26 | NGK Spark Plug Co., Ltd., Nagoya | Gassensor und Gassensoreinheit |
DE102004027630A1 (de) * | 2004-06-05 | 2006-01-05 | Robert Bosch Gmbh | Sensorelement zur Bestimmung einer physikalischen Eigenschaft eines Messgases |
US8057652B2 (en) * | 2005-03-28 | 2011-11-15 | Uchicago Argonne, Llc | High-temperature potentiometric oxygen sensor with internal reference |
DE102005023259A1 (de) * | 2005-05-20 | 2006-11-23 | Daimlerchrysler Ag | Abgassensor eines Kraftfahrzeugs |
US8252158B2 (en) * | 2006-11-01 | 2012-08-28 | Honeywell International Inc. | Oxygen sensors |
US20080282769A1 (en) * | 2007-05-18 | 2008-11-20 | Charles Scott Nelson | Apparatus and method for shielding a soot sensor |
US8012323B2 (en) * | 2008-03-12 | 2011-09-06 | Uchicago Argonne, Llc | Compact electrochemical bifunctional NOx/O2 sensors with internal reference for high temperature applications |
US9297791B2 (en) | 2012-12-20 | 2016-03-29 | Robert Bosch Gmbh | Gas sensor with thermal shock protection |
US10055523B2 (en) | 2014-04-24 | 2018-08-21 | Toyota Motor Engineering & Manufacturing North America, Inc. | Method for analyzing oxidation in an internal combustion engine |
DE102014208832A1 (de) * | 2014-05-12 | 2015-11-12 | Robert Bosch Gmbh | Verfahren zum Herstellen eines Sensorelements zur Erfassung mindestens einer Eigenschaft eines Messgases in einem Messgasraum |
JP6561719B2 (ja) * | 2014-10-30 | 2019-08-21 | 株式会社デンソー | ガスセンサ |
JP6686408B2 (ja) * | 2015-12-11 | 2020-04-22 | 株式会社デンソー | ガスセンサ |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA1015827A (en) * | 1974-11-18 | 1977-08-16 | General Motors Corporation | Air/fuel ratio sensor having catalytic and noncatalytic electrodes |
DE2504206C3 (de) * | 1975-02-01 | 1981-10-01 | Robert Bosch Gmbh, 7000 Stuttgart | Elektrochemischer Meßfühler für die Bestimmung des Sauerstoffgehalts in Abgasen, insbesondere in Abgasen von Verbrennungsmotoren |
JPS5274385A (en) * | 1975-12-18 | 1977-06-22 | Nissan Motor | Airrfuel ratio detector |
JPS5339789A (en) * | 1976-09-22 | 1978-04-11 | Nissan Motor | Oxygen sensor |
DE2711880C2 (de) * | 1977-03-18 | 1985-01-17 | Robert Bosch Gmbh, 7000 Stuttgart | Polarographischer Meßfühler zum Messen der Sauerstoffkonzentration und Verfahren zu seiner Herstellung |
DE2718907C2 (de) * | 1977-04-28 | 1984-04-12 | Robert Bosch Gmbh, 7000 Stuttgart | Meßfühler zur Bestimmung des Sauerstoffgehalts in Abgasen |
DE2855012A1 (de) * | 1978-12-20 | 1980-06-26 | Bosch Gmbh Robert | Elektrochemischer messfuehler fuer die bestimmung des sauerstoffgehaltes in gasen, insbesondere in abgasen |
DE2907032C2 (de) * | 1979-02-23 | 1984-06-20 | Robert Bosch Gmbh, 7000 Stuttgart | Polarographischer Sauerstoffmeßfühler für Gase, insbesondere für Abgase von Verbrennungsmotoren |
DE2909452C2 (de) * | 1979-03-10 | 1986-12-18 | Robert Bosch Gmbh, 7000 Stuttgart | Elektrochemischer Meßfühler für die Bestimmung des Sauerstoffgehaltes in Gasen, insbesondere in Abgasen |
DE2913866A1 (de) * | 1979-04-06 | 1980-10-23 | Bosch Gmbh Robert | Messfuehler fuer die bestimmung von bestandteilen in stroemenden gasen |
DE2928496A1 (de) * | 1979-07-14 | 1981-01-29 | Bosch Gmbh Robert | Elektrochemischer messfuehler fuer die bestimmung des sauerstoffgehaltes in gasen |
DE2937048C2 (de) * | 1979-09-13 | 1986-12-04 | Robert Bosch Gmbh, 7000 Stuttgart | Elektrochemischer Meßfühler für die Bestimmung des Sauerstoffgehaltes in Gasen, insbesondere in Abgasen von Brennkraftmaschinen |
SU1380936A1 (ru) * | 1986-03-11 | 1988-03-15 | Харьковский Институт Радиоэлектроники Им.Акад.М.К.Янгеля | Захватное устройство |
-
1980
- 1980-05-10 DE DE3017947A patent/DE3017947A1/de active Granted
-
1981
- 1981-04-22 FR FR8108041A patent/FR2482307A1/fr active Granted
- 1981-05-06 CA CA000376963A patent/CA1167527A/en not_active Expired
- 1981-05-07 IT IT21546/81A patent/IT1138323B/it active
- 1981-05-08 SE SE8102906A patent/SE452913B/sv not_active IP Right Cessation
- 1981-05-08 GB GB8114151A patent/GB2075690B/en not_active Expired
- 1981-05-11 JP JP6946681A patent/JPS577551A/ja active Granted
-
1984
- 1984-01-19 US US06/572,595 patent/US4502939A/en not_active Expired - Lifetime
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57201847A (en) * | 1981-06-08 | 1982-12-10 | Toyota Motor Corp | Lean sensor |
JPS60114762A (ja) * | 1983-11-28 | 1985-06-21 | Hitachi Ltd | 酸素濃度測定装置の製造方法 |
JPS613052A (ja) * | 1984-06-16 | 1986-01-09 | Ngk Spark Plug Co Ltd | 酸素センサ−の検出基板 |
JPH0582549B2 (ja) * | 1984-06-16 | 1993-11-19 | Ngk Spark Plug Co | |
JPS6252450A (ja) * | 1985-08-30 | 1987-03-07 | Ngk Insulators Ltd | 電気化学的素子及びその製造方法 |
JPH0623727B2 (ja) * | 1985-08-30 | 1994-03-30 | 日本碍子株式会社 | 電気化学的素子及びその製造方法 |
JPS6363963A (ja) * | 1986-09-04 | 1988-03-22 | Ngk Insulators Ltd | 工業用ガス濃度測定装置 |
Also Published As
Publication number | Publication date |
---|---|
GB2075690B (en) | 1984-11-28 |
FR2482307A1 (fr) | 1981-11-13 |
FR2482307B1 (ja) | 1984-12-28 |
IT1138323B (it) | 1986-09-17 |
JPH0128906B2 (ja) | 1989-06-06 |
CA1167527A (en) | 1984-05-15 |
SE452913B (sv) | 1987-12-21 |
DE3017947A1 (de) | 1981-11-12 |
GB2075690A (en) | 1981-11-18 |
DE3017947C2 (ja) | 1987-07-02 |
SE8102906L (sv) | 1981-11-11 |
IT8121546A0 (it) | 1981-05-07 |
US4502939A (en) | 1985-03-05 |
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