AR077528A1 - Metodo para eliminar arsenico como escorodita - Google Patents
Metodo para eliminar arsenico como escoroditaInfo
- Publication number
- AR077528A1 AR077528A1 ARP100100509A AR077528A1 AR 077528 A1 AR077528 A1 AR 077528A1 AR P100100509 A ARP100100509 A AR P100100509A AR 077528 A1 AR077528 A1 AR 077528A1
- Authority
- AR
- Argentina
- Prior art keywords
- arsenic
- iron
- ferric arsenate
- precipitation stage
- ferric
- Prior art date
Links
- 229910052785 arsenic Inorganic materials 0.000 title abstract 8
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 title abstract 8
- 238000000034 method Methods 0.000 title abstract 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 10
- BMWMWYBEJWFCJI-UHFFFAOYSA-K iron(3+);trioxido(oxo)-$l^{5}-arsane Chemical compound [Fe+3].[O-][As]([O-])([O-])=O BMWMWYBEJWFCJI-UHFFFAOYSA-K 0.000 abstract 8
- 229910052742 iron Inorganic materials 0.000 abstract 5
- 238000001556 precipitation Methods 0.000 abstract 4
- 239000000243 solution Substances 0.000 abstract 4
- VETKVGYBAMGARK-UHFFFAOYSA-N arsanylidyneiron Chemical compound [As]#[Fe] VETKVGYBAMGARK-UHFFFAOYSA-N 0.000 abstract 2
- 238000006243 chemical reaction Methods 0.000 abstract 2
- UYZMAFWCKGTUMA-UHFFFAOYSA-K iron(3+);trioxido(oxo)-$l^{5}-arsane;dihydrate Chemical compound O.O.[Fe+3].[O-][As]([O-])([O-])=O UYZMAFWCKGTUMA-UHFFFAOYSA-K 0.000 abstract 2
- 239000002244 precipitate Substances 0.000 abstract 2
- 230000002378 acidificating effect Effects 0.000 abstract 1
- 239000007864 aqueous solution Substances 0.000 abstract 1
- 150000001875 compounds Chemical class 0.000 abstract 1
- 239000007800 oxidant agent Substances 0.000 abstract 1
- 230000001590 oxidative effect Effects 0.000 abstract 1
- 230000001376 precipitating effect Effects 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G28/00—Compounds of arsenic
- C01G28/02—Arsenates; Arsenites
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/006—Wet processes
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G49/00—Compounds of iron
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G49/00—Compounds of iron
- C01G49/0018—Mixed oxides or hydroxides
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/20—Treatment or purification of solutions, e.g. obtained by leaching
- C22B3/44—Treatment or purification of solutions, e.g. obtained by leaching by chemical processes
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B30/00—Obtaining antimony, arsenic or bismuth
- C22B30/04—Obtaining arsenic
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/722—Oxidation by peroxides
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/74—Treatment of water, waste water, or sewage by oxidation with air
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/103—Arsenic compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
- C02F2101/203—Iron or iron compound
-
- 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
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Metallurgy (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Geochemistry & Mineralogy (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Removal Of Specific Substances (AREA)
- Compounds Of Iron (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
Abstract
La solicitud se refiere a un método para eliminar arsénico como escorodita a partir de soluciones que contienen hierro y arsénico. De acuerdo con el método, el arsénico es primero precipitado como arseniato férrico y posteriormente se procesa hidrotérmicamente en escorodita cristalina. Reivindicacion 1: Un método para precipitar hierro y arsénico como un compuesto poco soluble a partir de soluciones acuosas acídicas, caracterizado porque una solucion que contiene hierro y una solucion que contiene arsénico se oxidan por medio de un oxidante de modo que el hierro se oxida hasta trivalente y el arsénico hasta pentavalente y porque el hierro y arsénico se precipitan como arseniato férrico a presion atmosférica, con lo cual la relacion hierro-arsénico se ajusta a la region de 1-3,5, y el pH en la region de 1,5-4,5; y el precipitado de arseniato férrico formado es llevado a conversion hidrotérmica a una temperatura de 150-200°C, a la cual el arseniato férrico se cristaliza como escorodita poco soluble. Reivindicacion 2: Un método de acuerdo con la reivindicacion 1, caracterizado porque la relacion hierro-arsénico en la etapa de precipitacion de arseniato férrico se ajusta a entre 1-1,5. Reivindicacion 3: Un método de acuerdo con la reivindicacion 1, caracterizado porque el pH en la etapa de precipitacion de arseniato férrico es del orden de 1,5-2. Reivindicacion 4: Un método de acuerdo con la reivindicacion 1, caracterizado porque la conversion hidrotérmica se lleva a cabo a una temperatura de 160-180°C. Reivindicacion 10: Un método de acuerdo con la reivindicacion 1, caracterizado porque la solucion de la etapa de precipitacion de arseniato férrico se lleva por lo menos parcialmente de regreso a la etapa de precipitacion de arseniato férrico.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI20090066A FI122349B (fi) | 2009-02-23 | 2009-02-23 | Menetelmä arseenin poistamiseksi skorodiittina |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AR077528A1 true AR077528A1 (es) | 2011-09-07 |
Family
ID=40404587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ARP100100509 AR077528A1 (es) | 2009-02-23 | 2010-02-22 | Metodo para eliminar arsenico como escorodita |
Country Status (18)
| Country | Link |
|---|---|
| US (1) | US8790516B2 (es) |
| EP (1) | EP2398739B1 (es) |
| JP (1) | JP5739350B2 (es) |
| KR (1) | KR101330354B1 (es) |
| CN (1) | CN102307813B (es) |
| AR (1) | AR077528A1 (es) |
| AU (1) | AU2010215418B2 (es) |
| BR (1) | BRPI1007963B1 (es) |
| CA (1) | CA2753163C (es) |
| CL (1) | CL2011002032A1 (es) |
| EA (1) | EA020382B1 (es) |
| ES (1) | ES2696988T3 (es) |
| FI (1) | FI122349B (es) |
| MX (1) | MX2011008855A (es) |
| PE (1) | PE20120678A1 (es) |
| PT (1) | PT2398739T (es) |
| WO (1) | WO2010094841A1 (es) |
| ZA (1) | ZA201106255B (es) |
Families Citing this family (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102421708A (zh) * | 2009-05-13 | 2012-04-18 | 同和金属矿业有限公司 | 臭葱石型铁砷化合物粒子及制造方法以及含砷固态物 |
| JP2011168467A (ja) * | 2010-02-22 | 2011-09-01 | Dowa Metals & Mining Co Ltd | 結晶性スコロダイトの生成方法 |
| JP2011177651A (ja) * | 2010-03-01 | 2011-09-15 | Dowa Metals & Mining Co Ltd | ヒ素含有溶液の処理方法 |
| JP5734225B2 (ja) * | 2012-03-01 | 2015-06-17 | 国立大学法人九州大学 | 砒素の処理方法 |
| CN102642974B (zh) * | 2012-05-07 | 2014-05-07 | 昆明理工大学 | 一种高酸高氯废水处理方法 |
| JP6226235B2 (ja) * | 2013-03-29 | 2017-11-08 | 三菱マテリアル株式会社 | スコロダイトの製造方法 |
| EP3825424A1 (en) | 2014-01-31 | 2021-05-26 | Goldcorp Inc. | Process for stabilisation of an arsenic solution comprising thiosulfates |
| CN104846199A (zh) * | 2015-06-10 | 2015-08-19 | 云南驰宏锌锗股份有限公司 | 一种脱除硫酸铜溶液中铁、砷的方法 |
| CN106422151B (zh) * | 2016-08-24 | 2019-07-12 | 航天凯天环保科技股份有限公司 | 一种实现高浓度砷碱渣稳定化固化的方法 |
| CN107500362B (zh) * | 2017-09-15 | 2019-05-10 | 中南大学 | 一种图水羟砷铁矾及其制备方法和应用 |
| CN108483690B (zh) * | 2018-02-12 | 2021-10-08 | 中南大学 | 一种处理高砷废水的方法 |
| CN108455679B (zh) * | 2018-05-17 | 2019-12-06 | 中南大学 | 一种三维球状臭葱石晶体的制备方法及其应用 |
| CN108640390B (zh) * | 2018-05-31 | 2021-10-22 | 阳谷祥光铜业有限公司 | 一种含锑废水的处理方法 |
| US11220437B2 (en) * | 2018-12-24 | 2022-01-11 | Ecometales Limited | Procedure for obtaining scorodite with a high arsenic content from acidic solutions with high content of sulfuric acid |
| CN109607872B (zh) * | 2019-01-07 | 2021-11-19 | 紫金矿业集团股份有限公司 | 一种含砷污酸的综合利用及砷的安全处置方法 |
| CN109574319B (zh) * | 2019-01-07 | 2021-11-19 | 紫金矿业集团股份有限公司 | 有色金属冶炼高砷污酸的固砷工艺 |
| CN109761390A (zh) * | 2019-01-10 | 2019-05-17 | 昆明理工大学 | 一种工业含砷废水的无害化固砷方法 |
| US20220234909A1 (en) * | 2019-05-28 | 2022-07-28 | The Royal Institution For The Advancement Of Learning / Mcgill University | Method for producing scorodite |
| CN111039327A (zh) * | 2019-12-31 | 2020-04-21 | 福州大学 | 一种将砷渣一步转化成臭葱石的方法 |
| CN111170510B (zh) * | 2020-01-20 | 2022-03-29 | 宁波弗镁瑞环保科技有限公司 | 一种含砷废水处理并固化砷的方法 |
| CN111620380B (zh) * | 2020-07-10 | 2021-11-26 | 中南大学 | 一种水热处理三价砷制备臭葱石的方法及其应用 |
| CN115304105B (zh) * | 2022-09-14 | 2023-09-22 | 中南大学 | 一种水热固化富砷结晶物的方法 |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7314604B1 (en) * | 1999-09-30 | 2008-01-01 | Billiton Intellectual Property, B.V. | Stable ferric arsenate precipitation from acid copper solutions whilst minimising copper losses |
| FI119438B (fi) * | 2005-05-03 | 2008-11-14 | Outokumpu Oy | Menetelmä arvometallien ja arseenin talteenottamiseksi liuoksesta |
| JP2008260683A (ja) * | 2006-04-28 | 2008-10-30 | Dowa Metals & Mining Co Ltd | 砒酸鉄粉末 |
| EP2042472A4 (en) * | 2006-07-27 | 2013-05-29 | Dowa Metals & Mining Co Ltd | ARSENATE POWDER OF IRON |
| JP5102519B2 (ja) * | 2007-03-15 | 2012-12-19 | Ｄｏｗａメタルマイン株式会社 | 砒素含有固形物およびその製法 |
| JP4902450B2 (ja) * | 2007-07-13 | 2012-03-21 | Ｄｏｗａメタルマイン株式会社 | 砒素の処理方法 |
-
2009
- 2009-02-23 FI FI20090066A patent/FI122349B/fi not_active IP Right Cessation
-
2010
- 2010-02-19 MX MX2011008855A patent/MX2011008855A/es active IP Right Grant
- 2010-02-19 WO PCT/FI2010/050114 patent/WO2010094841A1/en active Application Filing
- 2010-02-19 EP EP10743445.8A patent/EP2398739B1/en active Active
- 2010-02-19 CA CA2753163A patent/CA2753163C/en active Active
- 2010-02-19 ES ES10743445T patent/ES2696988T3/es active Active
- 2010-02-19 EA EA201190123A patent/EA020382B1/ru not_active IP Right Cessation
- 2010-02-19 PE PE2011001403A patent/PE20120678A1/es active IP Right Grant
- 2010-02-19 BR BRPI1007963A patent/BRPI1007963B1/pt active IP Right Grant
- 2010-02-19 PT PT10743445T patent/PT2398739T/pt unknown
- 2010-02-19 JP JP2011550614A patent/JP5739350B2/ja active Active
- 2010-02-19 KR KR1020117021677A patent/KR101330354B1/ko active IP Right Grant
- 2010-02-19 CN CN201080006799.5A patent/CN102307813B/zh active Active
- 2010-02-19 AU AU2010215418A patent/AU2010215418B2/en active Active
- 2010-02-19 US US13/202,762 patent/US8790516B2/en active Active
- 2010-02-22 AR ARP100100509 patent/AR077528A1/es active IP Right Grant
-
2011
- 2011-08-19 CL CL2011002032A patent/CL2011002032A1/es unknown
- 2011-08-25 ZA ZA2011/06255A patent/ZA201106255B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| FI20090066A (fi) | 2010-08-23 |
| CA2753163A1 (en) | 2010-08-26 |
| EA201190123A1 (ru) | 2012-02-28 |
| CN102307813A (zh) | 2012-01-04 |
| EP2398739B1 (en) | 2018-08-29 |
| PE20120678A1 (es) | 2012-06-26 |
| KR20110117718A (ko) | 2011-10-27 |
| ES2696988T3 (es) | 2019-01-21 |
| US20110309029A1 (en) | 2011-12-22 |
| EP2398739A1 (en) | 2011-12-28 |
| AU2010215418A1 (en) | 2011-07-21 |
| CA2753163C (en) | 2017-02-28 |
| MX2011008855A (es) | 2011-09-15 |
| US8790516B2 (en) | 2014-07-29 |
| EP2398739A4 (en) | 2017-01-11 |
| BRPI1007963A2 (pt) | 2016-02-23 |
| JP2012518587A (ja) | 2012-08-16 |
| PT2398739T (pt) | 2018-11-29 |
| CN102307813B (zh) | 2014-11-05 |
| BRPI1007963B1 (pt) | 2020-05-19 |
| AU2010215418B2 (en) | 2014-07-31 |
| WO2010094841A1 (en) | 2010-08-26 |
| EA020382B1 (ru) | 2014-10-30 |
| FI20090066A0 (fi) | 2009-02-23 |
| CL2011002032A1 (es) | 2012-02-03 |
| KR101330354B1 (ko) | 2013-11-20 |
| JP5739350B2 (ja) | 2015-06-24 |
| ZA201106255B (en) | 2012-11-28 |
| FI122349B (fi) | 2011-12-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AR077528A1 (es) | Metodo para eliminar arsenico como escorodita | |
| CL2013002553A1 (es) | Metodo para producir un compuesto pentavalente de calcio-arsenico a partir de una solucion acida que contiene arsenico trivalente, donde la solucion es neutralizada con un compuesto de magnesio antes de una etapa de oxidacion, y luego es precipitado. | |
| PH12018501201A1 (en) | Site-activated binding systems that selectively increase the bioactivity of phenolic compounds at target sites | |
| WO2013040716A8 (en) | Treatment of phosphate-containing wastewater with fluorosilicate and phosphate recovery | |
| EP2554050A4 (en) | COMBINED CHLORINMS AND MANUFACTURING AND USE METHOD THEREFOR | |
| CL2008002063A1 (es) | Metodo de procesamiento de trioxido de diarsenico que comprende un paso de lixiviacion en el que se agrega agua al trioxido de diarsenico para producir una lechada, se lixivia el arsenico y se agrega un oxidante, un paso de desoxidacion y un paso de precipitacion de escorodita; y metodos de oxidacion de arsenico. | |
| WO2009076575A3 (en) | System and method for regenerating an absorbent solution | |
| WO2007146352A3 (en) | Methods of making water treatment compositions | |
| CL2010000811A1 (es) | Metodo para el procesamiento de polvo de convertidor de cobre que comprende un proceso de lixiviacion para remover plomo y otros metales insolubles a partir del polvo de convertidor de cobre, sulfidizacion recuperando el cobre y el arsenico, y neutralizacion de solucion resultante recuperando el cinc y el cadmio. | |
| WO2010013749A1 (ja) | メタクリル酸製造用触媒およびその製造方法、ならびにメタクリル酸の製造方法 | |
| TW200716493A (en) | A method for precipitating metal oxides from an aqueous waste solution | |
| WO2018094082A3 (en) | Methods and systems for concentrating digestate from biomass | |
| PE20160458A1 (es) | Metodo para la oxidacion y separacion de arsenico de soluciones de proceso y residuales | |
| MX2011004496A (es) | Aparato y metodo de tratamiento de agua de desecho. | |
| MX2017015865A (es) | Sistemas y metodos para recuperar compuestos nitrogenados de una corriente de gas. | |
| PE20100338A1 (es) | Proceso de lixiviacion para concentrados de cobre que contienen compuestos de arsenico y antimonio | |
| MX2009009011A (es) | Proceso para la produccion de un producto en base a materias fecales producidas por animales asi como una planta para la produccion del producto, especialmente un producto fertilizante. | |
| WO2011001246A3 (en) | A process for the recovery of selenium from minerals and/or acidic solutions | |
| CN105692956A (zh) | 一种低浓度有机磷废水的处理方法 | |
| CL2010000817A1 (es) | Metodo para procesar polvo de convertidor de cobre que comprende realizar proceso de oxidacion y lixiviacion con acido del polvo de convertidor por adicion de h2so4 e introduccion de aire o vapor y realizar un proceso de sulfidizacion para sulfurar la solucion de lixiviacion, y recuperar el cobre y el arsenico. | |
| MX2013008453A (es) | Precipitacion de zinc de la solucion. | |
| WO2009080597A3 (en) | Process for preparing organically modified layered double hydroxide | |
| GB2510987A (en) | Catalyst precursor | |
| WO2012134424A3 (en) | Purification of barium ion source | |
| EP2541694A3 (en) | Improved lamp connector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FG | Grant, registration |