US3799883A - Production of high purity fission product molybdenum-99 - Google Patents
Production of high purity fission product molybdenum-99 Download PDFInfo
- Publication number
- US3799883A US3799883A US00158396A US15839671A US3799883A US 3799883 A US3799883 A US 3799883A US 00158396 A US00158396 A US 00158396A US 15839671 A US15839671 A US 15839671A US 3799883 A US3799883 A US 3799883A
- Authority
- US
- United States
- Prior art keywords
- molybdenum
- solution
- uranium
- target
- fission product
- 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 - Lifetime
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Classifications
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21G—CONVERSION OF CHEMICAL ELEMENTS; RADIOACTIVE SOURCES
- G21G1/00—Arrangements for converting chemical elements by electromagnetic radiation, corpuscular radiation or particle bombardment, e.g. producing radioactive isotopes
- G21G1/04—Arrangements for converting chemical elements by electromagnetic radiation, corpuscular radiation or particle bombardment, e.g. producing radioactive isotopes outside nuclear reactors or particle accelerators
- G21G1/06—Arrangements for converting chemical elements by electromagnetic radiation, corpuscular radiation or particle bombardment, e.g. producing radioactive isotopes outside nuclear reactors or particle accelerators by neutron irradiation
- G21G1/08—Arrangements for converting chemical elements by electromagnetic radiation, corpuscular radiation or particle bombardment, e.g. producing radioactive isotopes outside nuclear reactors or particle accelerators by neutron irradiation accompanied by nuclear fission
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G39/00—Compounds of molybdenum
- C01G39/003—Preparation involving a liquid-liquid extraction, an adsorption or an ion-exchange
Definitions
- the present invention involves a multistep process for the production of fission product mo- 3 lybdenum-99 of a high degree of purity and having a high specific activity.
- the fission product molybdenum prepared by the process of this invention is ideally suited for the preparation of generators employing alumina substrates. In contrast to known generators which usually take at least 2 hours to prepare, generators can be conveniently prepared in less than minutes. Moreover, when fission product M0 is loaded on alumina at pH 4 to 9 no treatment of the substrate is required, and a high activity Tc generator that possesses a high separation factor can be obtained. By eliminating substrate treatment, the To generators can be produced in much shorter times. Additionally, since fission product molybdenum-99 is employed, the resulting technetium-99m solution obtained from the generator is of a greater concentration than heretofore possible. The highest concentration usually obtained was less than 50 millicuries per milliliter. In contrast, technetium- 99m can be obtained from the generators using fission product molybdenum-99 in concentrations of 1000 or higher, millicuries per milliliters.
- a further advantage characteristic of the process of this invention is that the substrate and/or the entire elution system can be sterilized, i.e., by autoclaving at the normally prescribed temperatures and pressures.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Plasma & Fusion (AREA)
- Inorganic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
Description
Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US00158396A US3799883A (en) | 1971-06-30 | 1971-06-30 | Production of high purity fission product molybdenum-99 |
CA142,933A CA969373A (en) | 1971-06-30 | 1972-05-25 | Production of high purity fission product molybdenum-99 |
BE785637A BE785637A (en) | 1971-06-30 | 1972-06-29 | PROCESS FOR PREPARING RADIOACTIVE MOLYBDENE-99 |
GB3050772A GB1389905A (en) | 1971-06-30 | 1972-06-29 | Production of high purity fission product molybdenum-99 |
DE2231976A DE2231976C3 (en) | 1971-06-30 | 1972-06-29 | Process for the production of high-purity, radioactive molybdenum-99 cleavage product |
IL39793A IL39793A (en) | 1971-06-30 | 1972-06-29 | Process for the preparation of radioactive molybdenum-99 |
FR7223546A FR2157781B1 (en) | 1971-06-30 | 1972-06-29 | |
NLAANVRAGE7209050,A NL172495C (en) | 1971-06-30 | 1972-06-29 | PROCESS FOR PREPARING VERY PURE RADIOACTIVE MOLYBDENE-99. |
JP47064558A JPS517800B1 (en) | 1971-06-30 | 1972-06-29 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US00158396A US3799883A (en) | 1971-06-30 | 1971-06-30 | Production of high purity fission product molybdenum-99 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3799883A true US3799883A (en) | 1974-03-26 |
Family
ID=22567913
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US00158396A Expired - Lifetime US3799883A (en) | 1971-06-30 | 1971-06-30 | Production of high purity fission product molybdenum-99 |
Country Status (9)
Country | Link |
---|---|
US (1) | US3799883A (en) |
JP (1) | JPS517800B1 (en) |
BE (1) | BE785637A (en) |
CA (1) | CA969373A (en) |
DE (1) | DE2231976C3 (en) |
FR (1) | FR2157781B1 (en) |
GB (1) | GB1389905A (en) |
IL (1) | IL39793A (en) |
NL (1) | NL172495C (en) |
Cited By (37)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4010109A (en) * | 1973-07-02 | 1977-03-01 | Kurt Sauerwein | Device for marking fluent materials |
US4093697A (en) * | 1976-03-16 | 1978-06-06 | Gesellschaft Fur Kernforschung M.B.H. | Process for recovering molybdenum-99 from a matrix containing neutron irradiated fissionable materials and fission products |
US4123497A (en) * | 1975-03-06 | 1978-10-31 | The Radiochemical Centre Limited | Purification of Technetium-99m pertechnetate solutions |
US4199551A (en) * | 1978-01-13 | 1980-04-22 | Amax Inc. | Recovery of molybdenum and uranium from activated charcoal containing molybdenum and residual uranium |
US4701308A (en) * | 1984-12-28 | 1987-10-20 | Commissariat A L'energie Atomique | Process for the recovery of molybdenum-99 from an irradiated uranium alloy target |
AU582659B2 (en) * | 1985-06-13 | 1989-04-06 | Comurhex Societe Pour La Conversion De L'uranium En Metal Et Hexafluorure | Process for separation by precipitation of the molybdenum contained in sulphuric or nitric solutions of uranium |
US4839133A (en) * | 1987-10-26 | 1989-06-13 | The United States Of America As Represented By The Department Of Energy | Target and method for the production of fission product molybdenum-99 |
US4935373A (en) * | 1979-06-28 | 1990-06-19 | Radiometer A/S | Reference liquid |
US4981658A (en) * | 1986-05-15 | 1991-01-01 | Kernforschungezentrum Karlsruhe Gmbh | Process for the fine purification of fissionable molybdenum |
US5802439A (en) * | 1997-02-19 | 1998-09-01 | Lockheed Martin Idaho Technologies Company | Method for the production of 99m Tc compositions from 99 Mo-containing materials |
US5802438A (en) * | 1997-02-19 | 1998-09-01 | Lockheed Martin Idaho Technologies Company | Method for generating a crystalline 99 MoO3 product and the isolation 99m Tc compositions therefrom |
US20020080907A1 (en) * | 2000-09-28 | 2002-06-27 | Carlo Rubbia | Method and device for heating gas from a thin layer of nuclear fuel, and space engine using such method |
US20090060812A1 (en) * | 2004-08-02 | 2009-03-05 | Schenter Robert E | Medical radioisotopes and methods for producing the same |
US20090196390A1 (en) * | 2008-02-05 | 2009-08-06 | The Curators Of The University Of Missouri | Radioisotope production and treatment of solution of target material |
US20100066374A1 (en) * | 2006-10-03 | 2010-03-18 | Trygstad W Marcus | Sample analyzer and sampling system |
US20100169134A1 (en) * | 2008-12-31 | 2010-07-01 | Microsoft Corporation | Fostering enterprise relationships |
WO2011103334A1 (en) * | 2010-02-19 | 2011-08-25 | Babcock & Wilcox | Method and apparatus for the extraction and processing of molybdenum-99 |
US20110250107A1 (en) * | 2010-04-07 | 2011-10-13 | Jennifer Varnedoe | Column geometry to maximize elution efficiencies for molybdenum-99 |
EP2398023A1 (en) | 2010-06-21 | 2011-12-21 | The European Union, represented by the European Commission | Production of molybdenum-99 |
WO2012018752A1 (en) * | 2010-08-04 | 2012-02-09 | Mallinckrodt Llc | Purification process |
DE102011002265A1 (en) * | 2011-04-26 | 2012-10-31 | Technische Universität München | Process for the preparation of starting material for a technetium generator |
US20130136221A1 (en) * | 2011-11-14 | 2013-05-30 | Japan Atomic Energy Agency | Method of producing radioactive molybdenum |
US8666015B2 (en) | 2001-05-08 | 2014-03-04 | The Curators Of The University Of Missouri | Method and apparatus for generating thermal neutrons using an electron accelerator |
US20140140462A1 (en) * | 2011-07-13 | 2014-05-22 | Luis A.M.M. Barbosa | Process |
US20140153684A1 (en) * | 2012-12-03 | 2014-06-05 | Wisconsin Alumni Research Foundation | Dry Phase Reactor for Generating Medical Isotopes |
WO2014137439A2 (en) | 2013-02-13 | 2014-09-12 | Battelle Memorial Institute | Nuclear reactor target assemblies, nuclear reactor configurations, and methods for producing isotopes, modifying materials within target material, and/or characterizing meaterial within a target material |
US9691511B1 (en) * | 2009-11-09 | 2017-06-27 | Sandia Corporation | Target-fueled nuclear reactor for medical isotope production |
US9793023B2 (en) | 2013-09-26 | 2017-10-17 | Los Alamos National Security, Llc | Recovery of uranium from an irradiated solid target after removal of molybdenum-99 produced from the irradiated target |
US9842664B2 (en) | 2013-09-26 | 2017-12-12 | Los Alamos National Security, Llc | Recovering and recycling uranium used for production of molybdenum-99 |
CN109285616A (en) * | 2018-11-16 | 2019-01-29 | 中国原子能科学研究院 | From235It is extracted in U fission product99The device of Mo and utilization device extraction99The method of Mo |
US10734126B2 (en) * | 2011-04-28 | 2020-08-04 | SHINE Medical Technologies, LLC | Methods of separating medical isotopes from uranium solutions |
US10978214B2 (en) | 2010-01-28 | 2021-04-13 | SHINE Medical Technologies, LLC | Segmented reaction chamber for radioisotope production |
WO2021211870A3 (en) * | 2020-04-16 | 2021-11-18 | Uchicago Argonne, Llc | Technetium-99m generator for enriched molybdenum |
WO2022005882A3 (en) * | 2020-06-30 | 2022-04-07 | Uchicago Argonne, Llc | System and method for producing molybdenum 99 |
EP3985686A1 (en) | 2020-10-14 | 2022-04-20 | Narodowe Centrum Badan Jadrowych | Method of preparation of the uranium target for the production of molybdenum, molybdenum production process and the uranium target for the production of molybdenum |
US11361873B2 (en) | 2012-04-05 | 2022-06-14 | Shine Technologies, Llc | Aqueous assembly and control method |
US11830637B2 (en) * | 2008-05-02 | 2023-11-28 | Shine Technologies, Llc | Device and method for producing medical isotopes |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2610948C3 (en) * | 1976-03-16 | 1980-01-10 | Kernforschungszentrum Karlsruhe Gmbh, 7500 Karlsruhe | Process for the extraction of molybdenum -99 from a matrix containing fissile substances and fission products irradiated with neutrons |
JPS5525844U (en) * | 1978-08-10 | 1980-02-19 | ||
FR2531060B1 (en) * | 1982-07-28 | 1986-07-04 | Cogema | PROCESS FOR RECOVERING MOLYBDENE FROM ACTIVE CARBON FROM AN ACID URANIFEROUS SOLUTION CONTAINING MORE MOLYBDENE THAN URANIUM |
US4659477A (en) * | 1982-08-16 | 1987-04-21 | Pedro B. Macedo | Fixation of anionic materials with a complexing agent |
JPS59114881U (en) * | 1983-01-24 | 1984-08-03 | 株式会社貝印刃物開発センター | pod support structure |
EP0779628A3 (en) * | 1995-12-11 | 1997-07-09 | Institut National des Radioéléments, Nationaal Instituut voor Radio-elementen | Method of stabilizing an aqueous solution of 99Mo molybdate |
RU2489501C1 (en) * | 2011-12-01 | 2013-08-10 | Общество с ограниченной ответственностью "Прайм-Инвест" | COMPOSITION OF EXTRACTION-CHROMATOGRAPHIC MATERIAL FOR SELECTIVE EXTRACTION OF Mo-99 FROM IRRADIATED URANIUM FUEL |
-
1971
- 1971-06-30 US US00158396A patent/US3799883A/en not_active Expired - Lifetime
-
1972
- 1972-05-25 CA CA142,933A patent/CA969373A/en not_active Expired
- 1972-06-29 IL IL39793A patent/IL39793A/en unknown
- 1972-06-29 DE DE2231976A patent/DE2231976C3/en not_active Expired
- 1972-06-29 BE BE785637A patent/BE785637A/en not_active IP Right Cessation
- 1972-06-29 NL NLAANVRAGE7209050,A patent/NL172495C/en not_active IP Right Cessation
- 1972-06-29 JP JP47064558A patent/JPS517800B1/ja active Pending
- 1972-06-29 FR FR7223546A patent/FR2157781B1/fr not_active Expired
- 1972-06-29 GB GB3050772A patent/GB1389905A/en not_active Expired
Cited By (59)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4010109A (en) * | 1973-07-02 | 1977-03-01 | Kurt Sauerwein | Device for marking fluent materials |
US4123497A (en) * | 1975-03-06 | 1978-10-31 | The Radiochemical Centre Limited | Purification of Technetium-99m pertechnetate solutions |
US4093697A (en) * | 1976-03-16 | 1978-06-06 | Gesellschaft Fur Kernforschung M.B.H. | Process for recovering molybdenum-99 from a matrix containing neutron irradiated fissionable materials and fission products |
US4199551A (en) * | 1978-01-13 | 1980-04-22 | Amax Inc. | Recovery of molybdenum and uranium from activated charcoal containing molybdenum and residual uranium |
US4935373A (en) * | 1979-06-28 | 1990-06-19 | Radiometer A/S | Reference liquid |
US4701308A (en) * | 1984-12-28 | 1987-10-20 | Commissariat A L'energie Atomique | Process for the recovery of molybdenum-99 from an irradiated uranium alloy target |
AU582659B2 (en) * | 1985-06-13 | 1989-04-06 | Comurhex Societe Pour La Conversion De L'uranium En Metal Et Hexafluorure | Process for separation by precipitation of the molybdenum contained in sulphuric or nitric solutions of uranium |
US4981658A (en) * | 1986-05-15 | 1991-01-01 | Kernforschungezentrum Karlsruhe Gmbh | Process for the fine purification of fissionable molybdenum |
US4839133A (en) * | 1987-10-26 | 1989-06-13 | The United States Of America As Represented By The Department Of Energy | Target and method for the production of fission product molybdenum-99 |
US5802439A (en) * | 1997-02-19 | 1998-09-01 | Lockheed Martin Idaho Technologies Company | Method for the production of 99m Tc compositions from 99 Mo-containing materials |
US5802438A (en) * | 1997-02-19 | 1998-09-01 | Lockheed Martin Idaho Technologies Company | Method for generating a crystalline 99 MoO3 product and the isolation 99m Tc compositions therefrom |
US20020080907A1 (en) * | 2000-09-28 | 2002-06-27 | Carlo Rubbia | Method and device for heating gas from a thin layer of nuclear fuel, and space engine using such method |
US6876714B2 (en) * | 2000-09-28 | 2005-04-05 | Carlo Rubbia | Device for heating gas from a thin layer of nuclear fuel, and space engine incorporating such device |
US8666015B2 (en) | 2001-05-08 | 2014-03-04 | The Curators Of The University Of Missouri | Method and apparatus for generating thermal neutrons using an electron accelerator |
US8126104B2 (en) * | 2004-08-02 | 2012-02-28 | Battelle Memorial Institute | Medical radioisotopes and methods for producing the same |
US20090060812A1 (en) * | 2004-08-02 | 2009-03-05 | Schenter Robert E | Medical radioisotopes and methods for producing the same |
US8497683B2 (en) * | 2006-10-03 | 2013-07-30 | Invensys Systems, Inc. | Spectroscopic sample analyzer and sample handling system |
US20100066374A1 (en) * | 2006-10-03 | 2010-03-18 | Trygstad W Marcus | Sample analyzer and sampling system |
EP2250649A2 (en) * | 2008-02-05 | 2010-11-17 | The Curators Of The University Of Missouri | Radioisotope production and treatment of solution of target material |
AU2009212487B2 (en) * | 2008-02-05 | 2014-03-27 | The Curators Of The University Of Missouri | Radioisotope production and treatment of solution of target material |
US20090196390A1 (en) * | 2008-02-05 | 2009-08-06 | The Curators Of The University Of Missouri | Radioisotope production and treatment of solution of target material |
US8644442B2 (en) | 2008-02-05 | 2014-02-04 | The Curators Of The University Of Missouri | Radioisotope production and treatment of solution of target material |
KR101353730B1 (en) * | 2008-02-05 | 2014-01-20 | 더 큐레이터스 오브 더 유니버시티 오브 미주리 | Radioisotope production and treatment of solution of target material |
WO2009100063A2 (en) | 2008-02-05 | 2009-08-13 | The Curators Of The University Of Missouri | Radioisotope production and treatment of solution of target material |
EP2250649A4 (en) * | 2008-02-05 | 2011-05-18 | Univ Missouri | Radioisotope production and treatment of solution of target material |
US11830637B2 (en) * | 2008-05-02 | 2023-11-28 | Shine Technologies, Llc | Device and method for producing medical isotopes |
US20100169134A1 (en) * | 2008-12-31 | 2010-07-01 | Microsoft Corporation | Fostering enterprise relationships |
US9691511B1 (en) * | 2009-11-09 | 2017-06-27 | Sandia Corporation | Target-fueled nuclear reactor for medical isotope production |
US10978214B2 (en) | 2010-01-28 | 2021-04-13 | SHINE Medical Technologies, LLC | Segmented reaction chamber for radioisotope production |
US11894157B2 (en) | 2010-01-28 | 2024-02-06 | Shine Technologies, Llc | Segmented reaction chamber for radioisotope production |
US8449850B2 (en) | 2010-02-19 | 2013-05-28 | Babcock & Wilcox Technical Services Group, Inc. | Method and apparatus for the extraction and processing of molybdenum-99 |
RU2548033C2 (en) * | 2010-02-19 | 2015-04-10 | БЭБКОК ЭНД ВИЛКОКС Текникал Сервисез Груп, Инк. | Method and apparatus for extracting and processing molybdenum-99 |
US20110206579A1 (en) * | 2010-02-19 | 2011-08-25 | Glenn Daniel E | Method and apparatus for the extraction and processing of molybdenum-99 |
WO2011103334A1 (en) * | 2010-02-19 | 2011-08-25 | Babcock & Wilcox | Method and apparatus for the extraction and processing of molybdenum-99 |
US20110250107A1 (en) * | 2010-04-07 | 2011-10-13 | Jennifer Varnedoe | Column geometry to maximize elution efficiencies for molybdenum-99 |
US9240253B2 (en) * | 2010-04-07 | 2016-01-19 | Ge-Hitachi Nuclear Energy Americas Llc | Column geometry to maximize elution efficiencies for molybdenum-99 |
EP2398023A1 (en) | 2010-06-21 | 2011-12-21 | The European Union, represented by the European Commission | Production of molybdenum-99 |
EP2993669A1 (en) * | 2010-08-04 | 2016-03-09 | Mallinckrodt LLC | Purification apparatus for mo-99 |
US10767243B2 (en) | 2010-08-04 | 2020-09-08 | Curium Us Llc | Purification process |
WO2012018752A1 (en) * | 2010-08-04 | 2012-02-09 | Mallinckrodt Llc | Purification process |
US9856543B2 (en) | 2010-08-04 | 2018-01-02 | Mallinckrodt Nuclear Medicine Llc | Purification process |
DE102011002265B4 (en) * | 2011-04-26 | 2012-12-06 | Technische Universität München | Process for the preparation of starting material for a technetium generator |
DE102011002265A1 (en) * | 2011-04-26 | 2012-10-31 | Technische Universität München | Process for the preparation of starting material for a technetium generator |
WO2012146586A1 (en) * | 2011-04-26 | 2012-11-01 | Technische Universität München | Method for producing starting material for a technetium generator |
US10734126B2 (en) * | 2011-04-28 | 2020-08-04 | SHINE Medical Technologies, LLC | Methods of separating medical isotopes from uranium solutions |
US20140140462A1 (en) * | 2011-07-13 | 2014-05-22 | Luis A.M.M. Barbosa | Process |
US20130136221A1 (en) * | 2011-11-14 | 2013-05-30 | Japan Atomic Energy Agency | Method of producing radioactive molybdenum |
US11361873B2 (en) | 2012-04-05 | 2022-06-14 | Shine Technologies, Llc | Aqueous assembly and control method |
US9330800B2 (en) * | 2012-12-03 | 2016-05-03 | Wisconsin Alumni Research Foundation | Dry phase reactor for generating medical isotopes |
US20140153684A1 (en) * | 2012-12-03 | 2014-06-05 | Wisconsin Alumni Research Foundation | Dry Phase Reactor for Generating Medical Isotopes |
US9997267B2 (en) | 2013-02-13 | 2018-06-12 | Battelle Memorial Institute | Nuclear reactor target assemblies, nuclear reactor configurations, and methods for producing isotopes, modifying materials within target material, and/or characterizing material within a target material |
WO2014137439A2 (en) | 2013-02-13 | 2014-09-12 | Battelle Memorial Institute | Nuclear reactor target assemblies, nuclear reactor configurations, and methods for producing isotopes, modifying materials within target material, and/or characterizing meaterial within a target material |
US9842664B2 (en) | 2013-09-26 | 2017-12-12 | Los Alamos National Security, Llc | Recovering and recycling uranium used for production of molybdenum-99 |
US9793023B2 (en) | 2013-09-26 | 2017-10-17 | Los Alamos National Security, Llc | Recovery of uranium from an irradiated solid target after removal of molybdenum-99 produced from the irradiated target |
CN109285616A (en) * | 2018-11-16 | 2019-01-29 | 中国原子能科学研究院 | From235It is extracted in U fission product99The device of Mo and utilization device extraction99The method of Mo |
WO2021211870A3 (en) * | 2020-04-16 | 2021-11-18 | Uchicago Argonne, Llc | Technetium-99m generator for enriched molybdenum |
WO2022005882A3 (en) * | 2020-06-30 | 2022-04-07 | Uchicago Argonne, Llc | System and method for producing molybdenum 99 |
WO2022079600A1 (en) | 2020-10-14 | 2022-04-21 | Narodowe Centrum Badan Jadrowych | A method of fabricating a uranium target for producing molybdenum, a process of producing molybdenum, and a uranium target for producing molybdenum |
EP3985686A1 (en) | 2020-10-14 | 2022-04-20 | Narodowe Centrum Badan Jadrowych | Method of preparation of the uranium target for the production of molybdenum, molybdenum production process and the uranium target for the production of molybdenum |
Also Published As
Publication number | Publication date |
---|---|
NL172495B (en) | 1983-04-05 |
JPS517800B1 (en) | 1976-03-11 |
IL39793A0 (en) | 1972-09-28 |
GB1389905A (en) | 1975-04-09 |
FR2157781A1 (en) | 1973-06-08 |
DE2231976B2 (en) | 1979-07-19 |
DE2231976C3 (en) | 1980-03-27 |
DE2231976A1 (en) | 1973-01-11 |
FR2157781B1 (en) | 1976-10-29 |
CA969373A (en) | 1975-06-17 |
BE785637A (en) | 1972-12-29 |
NL172495C (en) | 1983-09-01 |
NL7209050A (en) | 1973-01-03 |
IL39793A (en) | 1976-01-30 |
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