NO148984B - Fremgangsmaate for fremstilling av ammoniakk. - Google Patents
Fremgangsmaate for fremstilling av ammoniakk. Download PDFInfo
- Publication number
- NO148984B NO148984B NO773743A NO773743A NO148984B NO 148984 B NO148984 B NO 148984B NO 773743 A NO773743 A NO 773743A NO 773743 A NO773743 A NO 773743A NO 148984 B NO148984 B NO 148984B
- Authority
- NO
- Norway
- Prior art keywords
- chain
- wheel
- wave
- shaped parts
- plate
- Prior art date
Links
- 238000004519 manufacturing process Methods 0.000 title description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 title 1
- 238000000034 method Methods 0.000 title 1
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
- B01J21/18—Carbon
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/16—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
- B01J23/54—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
- B01J23/56—Platinum group metals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/76—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
- C01C1/00—Ammonia; Compounds thereof
- C01C1/02—Preparation, purification or separation of ammonia
- C01C1/04—Preparation of ammonia by synthesis in the gas phase
- C01C1/0405—Preparation of ammonia by synthesis in the gas phase from N2 and H2 in presence of a catalyst
- C01C1/0411—Preparation of ammonia by synthesis in the gas phase from N2 and H2 in presence of a catalyst characterised by the catalyst
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
- B01J35/61—Surface area
- B01J35/615—100-500 m2/g
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Analytical Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Catalysts (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Industrial Gases (AREA)
Description
Kjetting-pålegger for motorkjøretøyer.
Oppfinnelsen angår en kjetting-pålegger for motorkjøretøyer, bestående av en
list eller plate som plaseres på veien og som
er forsynt med tverrsrettede forsenkninger
hvori kjettingens tverrløkker innlegges, og
hvilken plate eller list gir en viss styring
for kjettingen.
Kjetting-påleggeren ifølge oppfinnelsen karakteriseres ved at den består av en
enkelt metallplate med to oppbøyde bølge-formede partier som er av samme høyde
og så høye at kjettingen etter hjulets på-kjøring blir liggende helt fri og ledig under hjulet, og hvilke bølgeformede partier
ligger så langt fra hverandre at de gir ét
stabilt leie for hjulet under pålegningen.
Fremstillingen av en kjetting-pålegger
etter oppfinnelsen blir enkel, slik at prisen
kan bli så lav at enhver kan anskaffe den.
Et utførelseseksempel av en pålegger
etter oppfinnelsen er vist på tegningen, i
perspektiv med kjettingen pålagt og hjulet påkjørt.
Påleggeren består av en smal, enkel
plate eller list 1 av aluminium eller annet
egnet materiale, med to oppbøyde bølge-formede partier (2) som er av samme høyde
og som er så høye at kjettingen blir liggende helt fri og ledig under hjulet og er lett
å stramme. Avstanden mellom de bølge-
formede partier 2 er videre så stor at de gir hjulet et stabilt leie under pålegning av kjettingen. En av kjettingens tverrløkker 3 legges mellom og på begge sider av de bølgeformede partier før hjulet kjøres opp på påleggeren.
Claims (1)
- Kjetting-pålegger for motorkjøretøyer, bestående av en plate eller list som plaseres på veien og som er forsynt med tversrettede forsenkninger hvori kj ettingens tverrløkker innlegges, og hvilken plate eller list gir en viss styring for kjettingen, karakterisert ved at påleggeren består av en enkelt metallplate (1) med to oppbøyde bølgeformede partier (2) som er av samme høyde og så høye at kjettingen etter hjulets påkjøring blir liggende helt fri og ledig under hjulet, og hvilke bølgeformede partier (2) ligger så langt fra hverandre at de gir et stabilt leie for hjulet under pålegningen.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB45711/76A GB1565074A (en) | 1976-11-03 | 1976-11-03 | Process for the production of ammonia |
Publications (3)
Publication Number | Publication Date |
---|---|
NO773743L NO773743L (no) | 1978-05-05 |
NO148984B true NO148984B (no) | 1983-10-17 |
NO148984C NO148984C (no) | 1984-01-25 |
Family
ID=10438266
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO773743A NO148984C (no) | 1976-11-03 | 1977-11-01 | Fremgangsmaate for fremstilling av ammoniakk |
Country Status (22)
Country | Link |
---|---|
US (2) | US4163775A (no) |
JP (1) | JPS5916816B2 (no) |
AU (1) | AU515799B2 (no) |
BE (1) | BE860440A (no) |
BR (1) | BR7707354A (no) |
CA (1) | CA1097887A (no) |
CS (1) | CS225807B2 (no) |
DE (1) | DE2748972A1 (no) |
ES (1) | ES464035A1 (no) |
FR (1) | FR2369872A1 (no) |
GB (1) | GB1565074A (no) |
IE (1) | IE46074B1 (no) |
IN (1) | IN146975B (no) |
IT (1) | IT1143770B (no) |
MX (1) | MX147295A (no) |
NL (1) | NL7712072A (no) |
NO (1) | NO148984C (no) |
NZ (1) | NZ185598A (no) |
PL (1) | PL116384B1 (no) |
PT (1) | PT67232B (no) |
SU (1) | SU904505A3 (no) |
ZA (1) | ZA776369B (no) |
Families Citing this family (50)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE415173B (sv) * | 1977-12-19 | 1980-09-15 | Atomenergi Ab | Forfarande for framstellning av ammoniak genom katalyserad reaktion mellan vete och kveve |
US4421533A (en) * | 1978-03-27 | 1983-12-20 | Takeda Chemical Industries, Ltd. | Method of removing ozone and composition therefor |
US4271136A (en) * | 1978-10-12 | 1981-06-02 | The British Petroleum Company Limited | Process for the production of ammonia |
US4309311A (en) * | 1980-01-08 | 1982-01-05 | Phillips Petroleum Company | Ammonia synthesis with catalyst derived by heating on a support a salt selected from alkali metal, alkaline earth metal, iron and cobalt hexacyanocobaltates and hexacyanoruthenates |
US4348370A (en) * | 1980-01-08 | 1982-09-07 | Phillips Petroleum Company | Ammonia synthesis with catalyst derived by heating on a support a salt selected from alkali metal, alkaline earth metal, iron and cobalt hexacyanocobaltates and hexacyanoruthenates |
US4337232A (en) * | 1981-03-16 | 1982-06-29 | Exxon Research & Engineering Co. | Ammonia synthesis process using molybdenum oxycarbonitride catalyst |
US4345038A (en) * | 1980-12-15 | 1982-08-17 | Exxon Research & Engineering Co. | CO Hydrogenation process using steam and molybdenum oxycarbonitride catalyst |
US4313853A (en) * | 1980-12-11 | 1982-02-02 | Exxon Research & Engineering Co. | Process for forming highly dispersed metal on graphite |
US4418154A (en) * | 1980-12-15 | 1983-11-29 | Exxon Research And Engineering Co. | CO Hydrogenation process using molybdenum oxycarbonitride catalyst |
AU548726B2 (en) * | 1981-02-13 | 1986-01-02 | British Petroleum Company Plc, The | Producing ammonia |
US4483756A (en) * | 1982-09-27 | 1984-11-20 | Atlantic Richfield Company | Method of applying electrical energy to a reactant chamber |
GB8307612D0 (en) * | 1983-03-18 | 1983-04-27 | British Petroleum Co Plc | Ammonia production and catalysts |
FR2565126A1 (fr) * | 1984-05-30 | 1985-12-06 | Applic Catalytiques Ste Ly | Nouvelle composition catalytique pour la combustion d'hydrocarbures et plus particulierement du methane |
GB8421828D0 (en) * | 1984-08-29 | 1984-10-03 | British Petroleum Co Plc | Fischer-tropsch catalysts |
US4568532A (en) * | 1984-10-16 | 1986-02-04 | The M. W. Kellogg Company | Supplemental ammonia synthesis |
US4568530A (en) * | 1984-10-16 | 1986-02-04 | The M. W. Kellogg Company | Ammonia synthesis |
GB8509530D0 (en) * | 1985-04-13 | 1985-05-15 | Bp Chem Int Ltd | Hydrogenation of carboxylic acids |
GB8510197D0 (en) * | 1985-04-22 | 1985-05-30 | Ici Plc | Catalysts |
GB8703323D0 (en) * | 1987-02-13 | 1987-03-18 | British Petroleum Co Plc | Separation process |
US4789538A (en) * | 1987-07-17 | 1988-12-06 | Standard Oil | Method of preparing ammonia and ammonia synthesis catalysts |
EP1176234B1 (en) * | 1992-05-22 | 2005-11-23 | Hyperion Catalysis International, Inc. | Supported catalysts, methods of making the same and methods of using the same |
US5344626A (en) * | 1992-06-26 | 1994-09-06 | Minnesota Mining And Manufacturing Company | Dual impregnated activated carbon |
KR970702758A (ko) | 1994-04-29 | 1997-06-10 | 마이클 제이. 켈리 | 개선된 다이 립을 갖는 조합 롤 및 다이 피복 방법 및 장치(combination roll and die coating method and apparatus with improved die lip) |
US6699454B1 (en) | 1994-05-12 | 2004-03-02 | Hyperion Catalysis International, Inc. | Catalysts for the manufacture of carbon fibrils and methods of use thereof |
US5523483A (en) * | 1995-06-16 | 1996-06-04 | The M. W. Kellogg Company | Integrated urea/ammonia process |
US5736116A (en) * | 1995-10-25 | 1998-04-07 | The M. W. Kellogg Company | Ammonia production with enriched air reforming and nitrogen injection into the synthesis loop |
FR2752534B1 (fr) * | 1996-08-22 | 1998-10-16 | Rhone Poulenc Chimie | Procede de traitement d'une solution ou suspension de composes organiques par oxydation en voie humide |
EP0931586B1 (en) * | 1997-11-28 | 2005-03-16 | Ammonia Casale S.A. | Method for in-situ modernization of a heterogeneous exothermic synthesis reactor |
US6132687A (en) * | 1998-05-21 | 2000-10-17 | Kellogg Brown & Root, Inc. | Horizontal ammonia converter adapted for high activity catalyst |
US6171570B1 (en) * | 1998-10-12 | 2001-01-09 | Kellogg Brown & Root, Inc. | Isothermal ammonia converter |
US6902709B1 (en) * | 1999-06-09 | 2005-06-07 | Kabushiki Kaisha Toshiba | Hydrogen removing apparatus |
ITMI20012565A1 (it) * | 2001-12-05 | 2003-06-05 | Univ Degli Studi Milano | Catalizzatori per la sintesi dell'ammoniaca |
US7892511B2 (en) * | 2004-07-02 | 2011-02-22 | Kellogg Brown & Root Llc | Pseudoisothermal ammonia process |
US7435401B2 (en) * | 2004-07-02 | 2008-10-14 | Kellogg Brown & Root Llc | Pseudoisothermal ammonia process |
US7371361B2 (en) * | 2004-11-03 | 2008-05-13 | Kellogg Brown & Root Llc | Maximum reaction rate converter system for exothermic reactions |
US8152988B2 (en) | 2007-08-31 | 2012-04-10 | Energy & Enviromental Research Center Foundation | Electrochemical process for the preparation of nitrogen fertilizers |
US9005422B2 (en) * | 2007-08-31 | 2015-04-14 | Energy & Environmental Research Center Foundation | Electrochemical process for the preparation of nitrogen fertilizers |
US20100183497A1 (en) | 2007-11-06 | 2010-07-22 | Quantumsphere, Inc. | System and method for ammonia synthesis |
US20090202417A1 (en) * | 2007-11-06 | 2009-08-13 | Quantumsphere, Inc. | System and method for ammonia synthesis |
US20090117014A1 (en) * | 2007-11-06 | 2009-05-07 | Quantumsphere, Inc. | System and method for ammonia synthesis |
KR20130021413A (ko) * | 2010-05-28 | 2013-03-05 | 그라페아, 인크. | 화학 변환을 위한 카보촉매 |
BR112013012061B1 (pt) | 2010-12-07 | 2021-09-28 | Japan Science And Technology Agency | Método de síntese de amônia e catalisador |
CN103357406B (zh) * | 2013-08-02 | 2016-05-04 | 福州大学 | 一种稀土元素掺杂的钙钛矿型负载钌氨合成催化剂 |
US10017395B2 (en) | 2014-03-13 | 2018-07-10 | Japan Science And Technology Agency | Ammonia synthesis catalyst and ammonia synthesis method |
JP6670754B2 (ja) | 2014-12-05 | 2020-03-25 | 国立研究開発法人科学技術振興機構 | 複合体、複合体の製造方法、アンモニア合成触媒及びアンモニア合成方法 |
JP6890788B2 (ja) | 2015-12-25 | 2021-06-18 | 国立大学法人東京工業大学 | 遷移金属担持金属間化合物、担持金属触媒、及びアンモニアの製造方法 |
JP2017154924A (ja) * | 2016-03-01 | 2017-09-07 | 三菱重工業株式会社 | 活性炭、活性炭の処理方法、アンモニア合成触媒及びアンモニア合成触媒の製造方法 |
WO2018215202A1 (en) * | 2017-05-22 | 2018-11-29 | Siemens Aktiengesellschaft | Catalyst for ammonia synthesis |
JP2020157243A (ja) * | 2019-03-27 | 2020-10-01 | 国立研究開発法人産業技術総合研究所 | アンモニア合成触媒 |
CN116809052B (zh) * | 2023-08-29 | 2023-11-28 | 北京大学 | 一种锕系离子-石墨炔复合材料及其制备方法和应用 |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1068967A (en) * | 1910-12-24 | 1913-07-29 | Basf Ag | Production of ammonia and catalytic agents for use therein. |
US1119534A (en) * | 1912-10-05 | 1914-12-01 | Dynamit Ag | Method for the preparation of ammonia from the elements. |
US1157253A (en) * | 1913-11-24 | 1915-10-19 | Mathias Pier | Process for the manufacture of ammonia from its elements. |
US3660028A (en) * | 1969-02-06 | 1972-05-02 | Univ Tokyo | Ammonia synthesis catalyst |
CA965766A (en) * | 1970-06-22 | 1975-04-08 | Akio Furuta | Ammonia synthesis catalyst and process |
DE2114769C3 (de) * | 1970-09-14 | 1974-08-01 | Sagami Chemical Research Center, Tokio | Verfahren zur Herstellung eines Katalysators für die Ammoniaksynthese |
US3697449A (en) * | 1970-12-14 | 1972-10-10 | Du Pont | Alkali moderation of supported ruthenium catalysts |
JPS4852693A (no) * | 1971-11-08 | 1973-07-24 | ||
US4055628A (en) * | 1974-09-02 | 1977-10-25 | The British Petroleum Company Limited | Method for preparing graphite containing carbon |
US4122040A (en) * | 1974-09-02 | 1978-10-24 | The British Petroleum Company Limited | Platinum group metal catalyst |
GB1468441A (en) * | 1974-09-02 | 1977-03-23 | British Petroleum Co | Catalyst support |
DE2560504C2 (no) * | 1974-09-02 | 1988-02-18 | The British Petroleum Co., Ltd., London, Gb | |
GB1471589A (en) * | 1974-10-24 | 1977-04-27 | British Petroleum Co | Desulphurisation catalyst and process |
US3951862A (en) * | 1974-10-30 | 1976-04-20 | The Lummus Company | Process for the preparation of ammonia synthesis catalyst |
-
1976
- 1976-11-03 GB GB45711/76A patent/GB1565074A/en not_active Expired
-
1977
- 1977-10-26 ZA ZA00776369A patent/ZA776369B/xx unknown
- 1977-10-29 IN IN1553/CAL/77A patent/IN146975B/en unknown
- 1977-10-31 US US05/847,075 patent/US4163775A/en not_active Expired - Lifetime
- 1977-10-31 MX MX171167A patent/MX147295A/es unknown
- 1977-10-31 CA CA289,907A patent/CA1097887A/en not_active Expired
- 1977-11-01 JP JP52130362A patent/JPS5916816B2/ja not_active Expired
- 1977-11-01 AU AU30225/77A patent/AU515799B2/en not_active Expired
- 1977-11-01 NO NO773743A patent/NO148984C/no unknown
- 1977-11-01 BR BR7707354A patent/BR7707354A/pt unknown
- 1977-11-02 NZ NZ185598A patent/NZ185598A/xx unknown
- 1977-11-02 PT PT67232A patent/PT67232B/pt unknown
- 1977-11-02 DE DE19772748972 patent/DE2748972A1/de active Granted
- 1977-11-02 PL PL1977201877A patent/PL116384B1/pl unknown
- 1977-11-02 NL NL7712072A patent/NL7712072A/xx not_active Application Discontinuation
- 1977-11-02 ES ES464035A patent/ES464035A1/es not_active Expired
- 1977-11-02 FR FR7732942A patent/FR2369872A1/fr active Granted
- 1977-11-02 IT IT29263/77A patent/IT1143770B/it active
- 1977-11-03 CS CS777188A patent/CS225807B2/cs unknown
- 1977-11-03 IE IE2242/77A patent/IE46074B1/en unknown
- 1977-11-03 BE BE182317A patent/BE860440A/xx not_active IP Right Cessation
- 1977-11-03 SU SU772541696A patent/SU904505A3/ru active
-
1978
- 1978-10-06 US US05/949,078 patent/US4250057A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
NO148984C (no) | 1984-01-25 |
NZ185598A (en) | 1980-04-28 |
CS225807B2 (en) | 1984-02-13 |
DE2748972A1 (de) | 1978-05-11 |
BE860440A (fr) | 1978-05-03 |
DE2748972C2 (no) | 1990-05-17 |
IT1143770B (it) | 1986-10-22 |
CA1097887A (en) | 1981-03-24 |
IE46074L (en) | 1978-05-03 |
US4250057A (en) | 1981-02-10 |
BR7707354A (pt) | 1978-06-20 |
IN146975B (no) | 1979-10-20 |
PL116384B1 (en) | 1981-06-30 |
FR2369872A1 (fr) | 1978-06-02 |
AU515799B2 (en) | 1981-04-30 |
JPS5916816B2 (ja) | 1984-04-18 |
PT67232B (en) | 1979-04-16 |
GB1565074A (en) | 1980-04-16 |
FR2369872B1 (no) | 1984-10-12 |
PT67232A (en) | 1977-12-01 |
PL201877A1 (pl) | 1978-06-19 |
ZA776369B (en) | 1979-06-27 |
IE46074B1 (en) | 1983-02-09 |
NO773743L (no) | 1978-05-05 |
US4163775A (en) | 1979-08-07 |
SU904505A3 (ru) | 1982-02-07 |
MX147295A (es) | 1982-11-10 |
NL7712072A (nl) | 1978-05-08 |
JPS5357193A (en) | 1978-05-24 |
AU3022577A (en) | 1979-05-10 |
ES464035A1 (es) | 1978-07-16 |
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