AT298842B - Verfahren zur Strahlungsanalyse eines Wasserdampf enthaltenden heißen Gases und Gerät zur Durchführung des Verfahrens - Google Patents
Verfahren zur Strahlungsanalyse eines Wasserdampf enthaltenden heißen Gases und Gerät zur Durchführung des VerfahrensInfo
- Publication number
- AT298842B AT298842B AT875269A AT875269A AT298842B AT 298842 B AT298842 B AT 298842B AT 875269 A AT875269 A AT 875269A AT 875269 A AT875269 A AT 875269A AT 298842 B AT298842 B AT 298842B
- Authority
- AT
- Austria
- Prior art keywords
- carrying
- water vapor
- gas containing
- hot gas
- containing water
- Prior art date
Links
- 230000005855 radiation Effects 0.000 title 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/04—Testing internal-combustion engines
- G01M15/10—Testing internal-combustion engines by monitoring exhaust gases or combustion flame
- G01M15/102—Testing internal-combustion engines by monitoring exhaust gases or combustion flame by monitoring exhaust gases
- G01M15/108—Testing internal-combustion engines by monitoring exhaust gases or combustion flame by monitoring exhaust gases using optical methods
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2247—Sampling from a flowing stream of gas
- G01N1/2258—Sampling from a flowing stream of gas in a stack or chimney
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
- G01N21/3504—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing gases, e.g. multi-gas analysis
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0011—Sample conditioning
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2247—Sampling from a flowing stream of gas
- G01N1/2252—Sampling from a flowing stream of gas in a vehicle exhaust
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2247—Sampling from a flowing stream of gas
- G01N1/2258—Sampling from a flowing stream of gas in a stack or chimney
- G01N2001/2261—Sampling from a flowing stream of gas in a stack or chimney preventing condensation (heating lines)
-
- 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
- Y10T436/00—Chemistry: analytical and immunological testing
- Y10T436/20—Oxygen containing
- Y10T436/204998—Inorganic carbon compounds
- Y10T436/205831—Carbon monoxide only
Landscapes
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Combustion & Propulsion (AREA)
- General Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Biochemistry (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Sampling And Sample Adjustment (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US76790368A | 1968-09-18 | 1968-09-18 | |
US81450969A | 1969-03-27 | 1969-03-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
AT298842B true AT298842B (de) | 1972-05-25 |
Family
ID=27117981
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT875269A AT298842B (de) | 1968-09-18 | 1969-09-16 | Verfahren zur Strahlungsanalyse eines Wasserdampf enthaltenden heißen Gases und Gerät zur Durchführung des Verfahrens |
Country Status (8)
Country | Link |
---|---|
US (1) | US3593023A (de) |
AT (1) | AT298842B (de) |
BE (1) | BE738942A (de) |
DE (2) | DE7017426U (de) |
FR (1) | FR2018314A1 (de) |
GB (1) | GB1242482A (de) |
NL (1) | NL142782B (de) |
SE (1) | SE358732B (de) |
Families Citing this family (94)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3696247A (en) * | 1970-11-12 | 1972-10-03 | Lionel D Mcintosh | Vehicle exhaust emissions analyzer |
US3756068A (en) * | 1971-04-30 | 1973-09-04 | Us Army | Carbon dioxide concentration sensor |
US3736792A (en) * | 1971-07-16 | 1973-06-05 | Sun Maid Raisin Growers | Apparatus and method for monitoring and recording fumigant concentrations in chamber fumigation |
JPS5610582B2 (de) * | 1972-02-04 | 1981-03-09 | ||
US3699814A (en) * | 1972-03-09 | 1972-10-24 | Philco Ford Corp | Gas sampler |
DE2215641A1 (de) * | 1972-03-30 | 1973-10-04 | Bosch Gmbh Robert | Vorrichtung zur ermittlung der zusammensetzung des abgases einer brennkraftmaschine |
US3793887A (en) * | 1972-12-05 | 1974-02-26 | Ford Motor Co | Isokinetic sampling probe |
US3826577A (en) * | 1972-12-07 | 1974-07-30 | Commercial Electronics Inc | Gas analyzing apparatus |
US3895915A (en) * | 1973-08-16 | 1975-07-22 | Megatech Corp | Gas analyzing |
DE2407133B2 (de) * | 1974-02-15 | 1976-12-09 | Deutsche Forschungs- und Versuchsanstalt für Luft- und Raumfahrt e.V., 5300 Bonn | Verfahren und vorrichtung zur bestimmung von stickoxid |
US3917454A (en) * | 1974-07-22 | 1975-11-04 | Sun Electric Corp | Exhaust emission analysis method |
US4160373A (en) * | 1974-12-19 | 1979-07-10 | United Technologies Corporation | Vehicle exhaust gas analysis system with gas blockage interlock |
US4148211A (en) * | 1978-03-22 | 1979-04-10 | Beckman Instruments, Inc. | Sampling system for engine exhaust gas analysis apparatus |
US4231256A (en) * | 1979-02-05 | 1980-11-04 | Beckman Instruments, Inc. | Thermoelectric gas dryer |
JPS5644347A (en) * | 1979-09-17 | 1981-04-23 | Hitachi Ltd | Diagnostic device for local overheating of rotary electric machine |
JPS6023723Y2 (ja) * | 1979-12-27 | 1985-07-15 | 富士電機株式会社 | 酸素ガス分析計 |
US4348732A (en) * | 1980-01-29 | 1982-09-07 | Sun Electric Corporation | Method and apparatus for engine exhaust analyzer |
US4336722A (en) * | 1980-11-04 | 1982-06-29 | Candel Industries, Limited | Method and apparatus for sampling waste gases |
US4386534A (en) * | 1981-10-16 | 1983-06-07 | Caterpillar Tractor Co. | System for obtaining exhaust samples and analyzing the same |
US4520652A (en) * | 1981-10-16 | 1985-06-04 | Caterpillar Tractor Co. | System for obtaining exhaust samples and analyzing the same |
US4471738A (en) * | 1982-09-13 | 1984-09-18 | Emission Control Systems, Inc. | Method and apparatus for minimizing the fuel usage in an internal combustion engine |
US4484481A (en) * | 1982-09-30 | 1984-11-27 | Sampling Technology, Inc. | Gas sampling extractor and conditioning assembly |
GB8528549D0 (en) * | 1985-11-20 | 1985-12-24 | Pitcraft Summit Ltd | Gas detector & mining machine |
JPS62157546A (ja) * | 1985-12-31 | 1987-07-13 | Horiba Ltd | 自動車排気ガスのモ−ダルマス解析方法 |
JPH0650279B2 (ja) * | 1986-08-07 | 1994-06-29 | 三菱自動車工業株式会社 | 排出ガス分析装置 |
FR2603104B1 (fr) * | 1986-08-25 | 1988-12-02 | Siderurgie Fse Inst Rech | Sonde de prelevement de gaz en milieu tres pollue et a haute temperature |
US4738147A (en) * | 1986-12-16 | 1988-04-19 | Sampling Technology, Inc. | Low flow sampling and analysis system |
US4902896A (en) * | 1987-05-08 | 1990-02-20 | Mine Safety Appliances Company | Infrared fluid analyzer |
US4924095A (en) * | 1987-06-02 | 1990-05-08 | West Lodge Research | Remote gas analyzer for motor vehicle exhaust emissions surveillance |
JPH0729494Y2 (ja) * | 1989-07-12 | 1995-07-05 | 株式会社堀場製作所 | 水素ガス分析装置 |
US5053200A (en) * | 1989-08-25 | 1991-10-01 | Schaeffer Matthew J | Flammable vapor analyzer |
JP2841224B2 (ja) * | 1990-02-07 | 1998-12-24 | 株式会社堀場製作所 | 気液分離器 |
US5205177A (en) * | 1991-01-23 | 1993-04-27 | Research-Cottrell, Inc. | Method and apparatus for gas monitoring |
US5184501A (en) * | 1991-05-03 | 1993-02-09 | Horiba Instruments Incorporated | Exhaust sampler and control means |
US5237881A (en) * | 1992-02-21 | 1993-08-24 | Anarad, Inc. | Inertial dilution filter probe |
US5337595A (en) * | 1992-03-18 | 1994-08-16 | Horiba Instruments, Incorporated | Subsonic venturi proportional and isokinetic sampling methods and apparatus |
FR2703460A1 (fr) * | 1993-04-01 | 1994-10-07 | Utac | Dispositif de mesure directe de l'opacité des gaz. |
US6058789A (en) * | 1994-03-26 | 2000-05-09 | Kohsaka; Hiroji | Sampling device for gas analyzers |
US5650565A (en) * | 1995-07-05 | 1997-07-22 | Enviromental Sciences Research And Development Partnership | Mini-dilution apparatus and method for exhaust emission testing |
US6200819B1 (en) * | 1995-09-29 | 2001-03-13 | Horiba Instruments, Inc. | Method and apparatus for providing diluent gas to exhaust emission analyzer |
US5756360A (en) * | 1995-09-29 | 1998-05-26 | Horiba Instruments Inc. | Method and apparatus for providing diluted gas to exhaust emission analyzer |
AU2344097A (en) * | 1996-03-27 | 1997-10-17 | Allied-Signal Inc. | Air contamination monitor |
DE19621073A1 (de) * | 1996-05-24 | 1997-11-27 | Baldwin Gegenheimer Gmbh | Tragbarer Kohlenwasserstoffmonitor für Lösemitteldämpfe |
DE19631002C2 (de) * | 1996-08-01 | 1998-07-16 | Testo Gmbh & Co | Meßgasschlauch für eine Gasanalyseeinrichtung |
US5726450A (en) | 1996-10-26 | 1998-03-10 | Envirotest Systems Corp. | Unmanned integrated optical remote emissions sensor (RES) for motor vehicles |
US5993743A (en) * | 1997-03-26 | 1999-11-30 | Spx Corporation | Hand-held vehicle exhaust analyzer |
US5846831A (en) * | 1997-04-01 | 1998-12-08 | Horiba Instuments, Inc. | Methods and systems for controlling flow of a diluted sample and determining pollutants based on water content in engine exhaust emissions |
EP0880022A3 (de) * | 1997-05-20 | 1999-02-24 | Sensors, Inc. | Messung der Massenemission von Fahrzeugabgasen |
DE19804985C1 (de) * | 1998-02-07 | 1999-05-06 | Bosch Gmbh Robert | Anordnung und Verfahren zur Abgasuntersuchung für Verbrennungsmotoren und Verwendung des Verfahrens |
DE19812027A1 (de) * | 1998-03-19 | 1999-09-30 | Testo Gmbh & Co | Messgerät |
US6085582A (en) * | 1998-04-29 | 2000-07-11 | Sensors, Inc. | Vehicle mass emission measurement |
US5907109A (en) * | 1998-05-05 | 1999-05-25 | Tedeschi; Rinaldo R. | Vehicle emission sampling probe apparatus |
US6230087B1 (en) | 1998-07-15 | 2001-05-08 | Envirotest Systems Corporation | Vehicular running loss detecting system |
US6723989B1 (en) | 1998-09-17 | 2004-04-20 | Envirotest Systems Corporation | Remote emissions sensing system and method with a composite beam of IR and UV radiation that is not split for detection |
WO2000016068A1 (en) | 1998-09-17 | 2000-03-23 | Envirotest Systems, Corp. | REMOTE EMISSIONS SENSING SYSTEM WITH IMPROVED NOx DETECTION |
ES2258858T3 (es) | 1998-10-30 | 2006-09-01 | Envirotest Systems, Inc. | Detector remoto para carriles multiples. |
EP1151276A4 (de) * | 1998-12-11 | 2003-07-23 | Envirotest Systems Inc | Vorrichtung zur messung der opazität von abgasen |
CN1343305A (zh) * | 1999-01-12 | 2002-04-03 | 环境测试系统公司 | 采用单个检测器的远距离车辆排气检测装置 |
JP2000314684A (ja) | 1999-04-16 | 2000-11-14 | Sensors Inc | 車両用質量排出量測定 |
ES2460215T3 (es) | 1999-12-29 | 2014-05-13 | Envirotest Systems Holdings Corp. | Sistema y método para el análisis remoto de emisiones de vehículos de motor pequeño |
CA2438735A1 (en) * | 2001-02-19 | 2002-08-29 | Rosemount Analytical Inc. | Improved generator monitoring, control and efficiency |
US6745708B2 (en) * | 2001-12-19 | 2004-06-08 | Conocophillips Company | Method and apparatus for improving the efficiency of a combustion device |
EP1714138A4 (de) * | 2004-02-09 | 2008-10-01 | Environmental Syst Prod | System und verfahren zur wahrnehmung entfernter emissionen unter einschluss von berechnungs- und kalibrierungstechniken zum ausgleichen von temperatur- und druckeffekten |
US7122065B2 (en) | 2004-02-25 | 2006-10-17 | Honeywell International, Inc. | Adapter for low volume air sampler |
US7089747B2 (en) * | 2004-02-27 | 2006-08-15 | Honeywell International, Inc. | Pressure reduction apparatus and method |
US20050188773A1 (en) * | 2004-02-27 | 2005-09-01 | Fox Richard B. | High volume air sampler |
US7337683B2 (en) * | 2004-04-28 | 2008-03-04 | M & C Products Analysis Technology, Inc. | Insitu inertial particulate separation system |
US20050274169A1 (en) * | 2004-06-10 | 2005-12-15 | James Butler | Vehicle/engine sampling system for precise analysis of exhaust components |
EP1938077B1 (de) * | 2005-09-06 | 2010-07-28 | S.T.I. Security Technology Integration Ltd. | Verfahren und vorrichtung zum nachweis von spuren an substanzen |
EP1801566A1 (de) * | 2005-12-22 | 2007-06-27 | Delphi Technologies, Inc. | Gastemperaturstabilisierung für einen Gasanalysator |
AT509557B1 (de) * | 2011-06-10 | 2012-05-15 | Avl List Gmbh | Verfahren und vorrichtung zur analyse des abgases von verbrennungskraftmaschinen, sowie abgas-kühler für diese vorrichtung |
US9188033B2 (en) | 2012-01-04 | 2015-11-17 | Ini Power Systems, Inc. | Flexible fuel generator and methods of use thereof |
US9175601B2 (en) * | 2012-01-04 | 2015-11-03 | Ini Power Systems, Inc. | Flex fuel field generator |
US8810053B2 (en) | 2012-02-29 | 2014-08-19 | Ini Power Systems, Inc. | Method and apparatus for efficient fuel consumption |
DE102012021928A1 (de) | 2012-11-09 | 2014-05-15 | Man Truck & Bus Ag | Verfahren und Vorrichtung zur Kalibrierung eines Abgassensors |
USD733052S1 (en) | 2012-12-20 | 2015-06-30 | Ini Power Systems, Inc. | Flexible fuel generator |
US9638630B2 (en) * | 2013-11-21 | 2017-05-02 | TOTAL Gas Detection Ltd. | Methods and devices for analyzing gases in well-related fluids using fourier transform infrared (FTIR) spectroscopy |
DE102014101915A1 (de) * | 2014-02-14 | 2015-08-20 | Avl Emission Test Systems Gmbh | Vorrichtung und Verfahren zur Bestimmung der Konzentration zumindest eines Gases in einem Probengasstrom mittels Infrarotabsorptionsspektroskopie |
US9909534B2 (en) | 2014-09-22 | 2018-03-06 | Ini Power Systems, Inc. | Carbureted engine having an adjustable fuel to air ratio |
CN104820063B (zh) * | 2015-03-26 | 2016-06-22 | 盐城工学院 | 基于汽车行驶中的多通道式车载空气监控系统 |
USD827572S1 (en) | 2015-03-31 | 2018-09-04 | Ini Power Systems, Inc. | Flexible fuel generator |
US10030609B2 (en) | 2015-11-05 | 2018-07-24 | Ini Power Systems, Inc. | Thermal choke, autostart generator system, and method of use thereof |
CN105486551A (zh) * | 2015-11-20 | 2016-04-13 | 广东伟创科技开发有限公司 | 烟气采样器 |
JP7009083B2 (ja) * | 2017-05-24 | 2022-01-25 | 株式会社堀場製作所 | 排ガス分析装置及び排ガス分析方法 |
GB2567441A (en) * | 2017-10-11 | 2019-04-17 | Nyquist Solutions Ltd | Exhaust gas analyser |
CN108225777A (zh) * | 2017-12-27 | 2018-06-29 | 中国航发四川燃气涡轮研究院 | 超燃冲压发动机燃气分析高焓取样探针 |
US11837432B1 (en) * | 2019-11-25 | 2023-12-05 | National Technology & Engineering Solutions Of Sandia, Llc | Gas delivery system for environmental transmission electron microscope |
CN111426482B (zh) * | 2020-05-06 | 2021-03-23 | 湖南汉能科技有限公司 | 一种航空发动机燃烧室试验台 |
CN111766331B (zh) * | 2020-07-09 | 2022-08-09 | 安徽工程大学 | 一种便携式建筑材料燃烧性能测试装置及其测试方法 |
CN112033681B (zh) * | 2020-07-31 | 2022-07-26 | 中国航发贵阳发动机设计研究所 | 一种加力燃烧室出口温度误差修正的方法 |
AT524314B1 (de) * | 2020-11-23 | 2022-05-15 | Avl Ditest Gmbh | Emissionsmessgerät mit Selbsttestfunktion |
DE102020133185A1 (de) | 2020-12-11 | 2022-06-15 | Avl Schrick Gmbh | Abgasanalysesystem zur Bestimmung der Konzentration chemischer Komponenten in Abgasströmen |
CN113680476B (zh) * | 2021-08-02 | 2022-09-16 | 湘西自然生物科技有限公司 | 一种中成药提纯用草药加温过滤装置 |
CN114441192B (zh) * | 2022-01-26 | 2023-07-04 | 重庆长安汽车股份有限公司 | 一种乘用车常温下热累积与动力衰减的测试与评价方法 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1658391A (en) * | 1923-07-11 | 1928-02-07 | Comb Control Company Inc | Combustion-gas-sampling apparatus |
US2824967A (en) * | 1944-10-31 | 1958-02-25 | Martin D Kamen | Calutron |
GB1045004A (en) * | 1964-02-12 | 1966-10-05 | Francesco Rabotti S P A | A probe for drawing combustion products to be analyzed from internal combustion engine exhaust gases |
US3296435A (en) * | 1964-07-06 | 1967-01-03 | Dow Chemical Co | Method and apparatus for determining the total carbon content of aqueous systems |
US3461727A (en) * | 1967-05-29 | 1969-08-19 | Rca Corp | Gas sampler |
US3472067A (en) * | 1967-07-03 | 1969-10-14 | Marian F Chew | Automobile engine exhaust testing method and apparatus |
US3481200A (en) * | 1968-10-01 | 1969-12-02 | Hartmann & Braun Ag | Exhaust gas sampler |
-
1969
- 1969-03-27 US US814509*A patent/US3593023A/en not_active Expired - Lifetime
- 1969-09-08 GB GB44321/69A patent/GB1242482A/en not_active Expired
- 1969-09-12 DE DE7017426U patent/DE7017426U/de not_active Expired
- 1969-09-12 DE DE6935844U patent/DE6935844U/de not_active Expired
- 1969-09-16 AT AT875269A patent/AT298842B/de not_active IP Right Cessation
- 1969-09-16 FR FR6931416A patent/FR2018314A1/fr not_active Withdrawn
- 1969-09-17 SE SE12798/69A patent/SE358732B/xx unknown
- 1969-09-17 BE BE738942D patent/BE738942A/xx unknown
- 1969-09-18 NL NL696914159A patent/NL142782B/xx unknown
Also Published As
Publication number | Publication date |
---|---|
DE1946210A1 (de) | 1970-04-09 |
DE7017426U (de) | 1970-10-22 |
SE358732B (de) | 1973-08-06 |
DE6935844U (de) | 1970-09-10 |
NL6914159A (de) | 1970-03-20 |
US3593023A (en) | 1971-07-13 |
DE1946210B2 (de) | 1976-10-07 |
GB1242482A (en) | 1971-08-11 |
NL142782B (nl) | 1974-07-15 |
BE738942A (de) | 1970-03-02 |
FR2018314A1 (de) | 1970-05-29 |
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