CH622436A5 - - Google Patents
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- Publication number
- CH622436A5 CH622436A5 CH582675A CH582675A CH622436A5 CH 622436 A5 CH622436 A5 CH 622436A5 CH 582675 A CH582675 A CH 582675A CH 582675 A CH582675 A CH 582675A CH 622436 A5 CH622436 A5 CH 622436A5
- Authority
- CH
- Switzerland
- Prior art keywords
- proteins
- solution
- electrodialysis
- alcohol
- fraction
- Prior art date
Links
- 238000000034 method Methods 0.000 claims description 79
- 235000018102 proteins Nutrition 0.000 claims description 66
- 102000004169 proteins and genes Human genes 0.000 claims description 66
- 108090000623 proteins and genes Proteins 0.000 claims description 66
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 53
- 102000009027 Albumins Human genes 0.000 claims description 41
- 108010088751 Albumins Proteins 0.000 claims description 41
- 230000008569 process Effects 0.000 claims description 34
- 238000005194 fractionation Methods 0.000 claims description 33
- 108010045362 Serum Globulins Proteins 0.000 claims description 32
- 102000005686 Serum Globulins Human genes 0.000 claims description 32
- 238000000909 electrodialysis Methods 0.000 claims description 32
- 210000002381 plasma Anatomy 0.000 claims description 32
- 239000002244 precipitate Substances 0.000 claims description 31
- 238000001556 precipitation Methods 0.000 claims description 26
- 239000000203 mixture Substances 0.000 claims description 25
- 239000000243 solution Substances 0.000 claims description 24
- 239000006228 supernatant Substances 0.000 claims description 24
- 238000011033 desalting Methods 0.000 claims description 23
- 238000001962 electrophoresis Methods 0.000 claims description 21
- 239000012460 protein solution Substances 0.000 claims description 17
- 238000000926 separation method Methods 0.000 claims description 15
- 230000005684 electric field Effects 0.000 claims description 14
- 239000000872 buffer Substances 0.000 claims description 9
- 239000000047 product Substances 0.000 claims description 9
- DHMQDGOQFOQNFH-UHFFFAOYSA-N Glycine Chemical compound NCC(O)=O DHMQDGOQFOQNFH-UHFFFAOYSA-N 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 6
- 230000003139 buffering effect Effects 0.000 claims description 5
- 239000004471 Glycine Substances 0.000 claims description 4
- 239000005862 Whey Substances 0.000 claims description 4
- 102000007544 Whey Proteins Human genes 0.000 claims description 4
- 108010046377 Whey Proteins Proteins 0.000 claims description 4
- 238000000502 dialysis Methods 0.000 claims description 4
- YMAWOPBAYDPSLA-UHFFFAOYSA-N glycylglycine Chemical compound [NH3+]CC(=O)NCC([O-])=O YMAWOPBAYDPSLA-UHFFFAOYSA-N 0.000 claims description 4
- 210000002966 serum Anatomy 0.000 claims description 4
- XKUKSGPZAADMRA-UHFFFAOYSA-N glycyl-glycyl-glycine Chemical compound NCC(=O)NCC(=O)NCC(O)=O XKUKSGPZAADMRA-UHFFFAOYSA-N 0.000 claims description 3
- 235000013336 milk Nutrition 0.000 claims description 3
- 239000008267 milk Substances 0.000 claims description 3
- 210000004080 milk Anatomy 0.000 claims description 3
- QCVGEOXPDFCNHA-UHFFFAOYSA-N 5,5-dimethyl-2,4-dioxo-1,3-oxazolidine-3-carboxamide Chemical compound CC1(C)OC(=O)N(C(N)=O)C1=O QCVGEOXPDFCNHA-UHFFFAOYSA-N 0.000 claims description 2
- 102000002322 Egg Proteins Human genes 0.000 claims description 2
- 108010000912 Egg Proteins Proteins 0.000 claims description 2
- 108010008488 Glycylglycine Proteins 0.000 claims description 2
- QNAYBMKLOCPYGJ-REOHCLBHSA-N L-alanine Chemical compound C[C@H](N)C(O)=O QNAYBMKLOCPYGJ-REOHCLBHSA-N 0.000 claims description 2
- 235000004279 alanine Nutrition 0.000 claims description 2
- 239000003513 alkali Substances 0.000 claims description 2
- 210000000969 egg white Anatomy 0.000 claims description 2
- 235000014103 egg white Nutrition 0.000 claims description 2
- 239000012530 fluid Substances 0.000 claims description 2
- 108010067216 glycyl-glycyl-glycine Proteins 0.000 claims description 2
- 229940043257 glycylglycine Drugs 0.000 claims description 2
- 239000006193 liquid solution Substances 0.000 claims description 2
- LENZDBCJOHFCAS-UHFFFAOYSA-N tris Chemical compound OCC(N)(CO)CO LENZDBCJOHFCAS-UHFFFAOYSA-N 0.000 claims description 2
- 210000002700 urine Anatomy 0.000 claims description 2
- 239000012528 membrane Substances 0.000 description 35
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 21
- 150000003839 salts Chemical class 0.000 description 13
- 230000000694 effects Effects 0.000 description 11
- 239000007788 liquid Substances 0.000 description 10
- 238000002360 preparation method Methods 0.000 description 9
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 8
- 238000002474 experimental method Methods 0.000 description 8
- 230000007935 neutral effect Effects 0.000 description 8
- 238000005119 centrifugation Methods 0.000 description 7
- 238000011084 recovery Methods 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 238000010612 desalination reaction Methods 0.000 description 6
- 239000003792 electrolyte Substances 0.000 description 6
- 239000007858 starting material Substances 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 239000008151 electrolyte solution Substances 0.000 description 5
- 229940021013 electrolyte solution Drugs 0.000 description 5
- 150000002500 ions Chemical class 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 102000004506 Blood Proteins Human genes 0.000 description 4
- 108010017384 Blood Proteins Proteins 0.000 description 4
- 102000006395 Globulins Human genes 0.000 description 4
- 108010044091 Globulins Proteins 0.000 description 4
- 102000007562 Serum Albumin Human genes 0.000 description 4
- 108010071390 Serum Albumin Proteins 0.000 description 4
- 239000013060 biological fluid Substances 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- 239000000470 constituent Substances 0.000 description 4
- 239000012153 distilled water Substances 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 239000011780 sodium chloride Substances 0.000 description 4
- 238000011282 treatment Methods 0.000 description 4
- 238000005406 washing Methods 0.000 description 4
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical class N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 210000004027 cell Anatomy 0.000 description 3
- 239000012141 concentrate Substances 0.000 description 3
- 239000003014 ion exchange membrane Substances 0.000 description 3
- 229920000867 polyelectrolyte Polymers 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 102000018721 Macroglobulins Human genes 0.000 description 2
- 108010091934 Macroglobulins Proteins 0.000 description 2
- 241001465754 Metazoa Species 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000000084 colloidal system Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000008367 deionised water Substances 0.000 description 2
- 229910021641 deionized water Inorganic materials 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- 238000010291 electrical method Methods 0.000 description 2
- 108010074605 gamma-Globulins Proteins 0.000 description 2
- WQYVRQLZKVEZGA-UHFFFAOYSA-N hypochlorite Chemical compound Cl[O-] WQYVRQLZKVEZGA-UHFFFAOYSA-N 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000036961 partial effect Effects 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 229910001415 sodium ion Inorganic materials 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 241000283690 Bos taurus Species 0.000 description 1
- 208000037319 Hepatitis infectious Diseases 0.000 description 1
- 108060003951 Immunoglobulin Proteins 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 229920002125 Sokalan® Polymers 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- -1 alanine Chemical class 0.000 description 1
- 230000003113 alkalizing effect Effects 0.000 description 1
- 235000001014 amino acid Nutrition 0.000 description 1
- 150000001413 amino acids Chemical class 0.000 description 1
- 125000000129 anionic group Chemical group 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000337 buffer salt Substances 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 238000002144 chemical decomposition reaction Methods 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000000975 co-precipitation Methods 0.000 description 1
- 239000013065 commercial product Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000036425 denaturation Effects 0.000 description 1
- 238000004925 denaturation Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 235000013601 eggs Nutrition 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 239000004931 filters and membranes Substances 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 208000005252 hepatitis A Diseases 0.000 description 1
- 102000018358 immunoglobulin Human genes 0.000 description 1
- 229940072221 immunoglobulins Drugs 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 230000036512 infertility Effects 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 239000003456 ion exchange resin Substances 0.000 description 1
- 229920003303 ion-exchange polymer Polymers 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 235000020094 liqueur Nutrition 0.000 description 1
- 238000009285 membrane fouling Methods 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 239000008363 phosphate buffer Substances 0.000 description 1
- 239000004584 polyacrylic acid Substances 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 235000004252 protein component Nutrition 0.000 description 1
- 230000004850 protein–protein interaction Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 239000004627 regenerated cellulose Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- BYKRNSHANADUFY-UHFFFAOYSA-M sodium octanoate Chemical compound [Na+].CCCCCCCC([O-])=O BYKRNSHANADUFY-UHFFFAOYSA-M 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000000021 stimulant Substances 0.000 description 1
- 239000012134 supernatant fraction Substances 0.000 description 1
- 238000000108 ultra-filtration Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D57/00—Separation, other than separation of solids, not fully covered by a single other group or subclass, e.g. B03C
- B01D57/02—Separation, other than separation of solids, not fully covered by a single other group or subclass, e.g. B03C by electrophoresis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/42—Electrodialysis; Electro-osmosis ; Electro-ultrafiltration; Membrane capacitive deionization
- B01D61/44—Ion-selective electrodialysis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2311/00—Details relating to membrane separation process operations and control
- B01D2311/26—Further operations combined with membrane separation processes
- B01D2311/2642—Aggregation, sedimentation, flocculation, precipitation or coagulation
-
- 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
- G01N27/416—Systems
- G01N27/447—Systems using electrophoresis
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Water Supply & Treatment (AREA)
- Health & Medical Sciences (AREA)
- Urology & Nephrology (AREA)
- Molecular Biology (AREA)
- Environmental & Geological Engineering (AREA)
- Electrochemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Peptides Or Proteins (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
- Medicines Containing Material From Animals Or Micro-Organisms (AREA)
- Investigating Or Analysing Biological Materials (AREA)
- Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US05/467,115 US3972791A (en) | 1974-05-06 | 1974-05-06 | Fractionation of proteins by electrical means |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH622436A5 true CH622436A5 (es) | 1981-04-15 |
Family
ID=23854426
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH582675A CH622436A5 (es) | 1974-05-06 | 1975-05-06 |
Country Status (13)
| Country | Link |
|---|---|
| US (1) | US3972791A (es) |
| JP (1) | JPS50153696A (es) |
| BE (1) | BE828752A (es) |
| BR (1) | BR7502739A (es) |
| CA (1) | CA1043703A (es) |
| CH (1) | CH622436A5 (es) |
| DE (1) | DE2519909A1 (es) |
| ES (1) | ES437483A1 (es) |
| FR (1) | FR2270267B1 (es) |
| GB (1) | GB1496726A (es) |
| IT (1) | IT1032822B (es) |
| NL (1) | NL7505304A (es) |
| ZA (1) | ZA752829B (es) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4204929A (en) * | 1978-04-18 | 1980-05-27 | University Patents, Inc. | Isoelectric focusing method |
| JPS5569298A (en) * | 1978-11-17 | 1980-05-24 | Kureha Chem Ind Co Ltd | Electrodeposition method of protein |
| US4238306A (en) * | 1979-02-14 | 1980-12-09 | Research Products Rehovot Ltd. | Electrodialysis process for the separation of non-essential amino acids from derivatives thereof |
| US4238307A (en) * | 1979-02-14 | 1980-12-09 | Research Products Rehovot Ltd. | Electrodialysis process for the separation of essential amino acids from derivatives thereof |
| US4276140A (en) * | 1980-01-10 | 1981-06-30 | Ionics Inc. | Electrodialysis apparatus and process for fractionating protein mixtures |
| US4322275A (en) * | 1980-01-10 | 1982-03-30 | Ionics Incorporated | Fractionation of protein mixtures |
| US4351710A (en) * | 1980-01-10 | 1982-09-28 | Ionics, Incorporated | Fractionation of protein mixtures |
| FR2492269A2 (fr) * | 1980-01-10 | 1982-04-23 | Ionics | Appareil d'electrodialyse et procede de fractionnement de melanges de proteines |
| DE3219248A1 (de) * | 1982-05-21 | 1983-11-24 | Solco Basel AG, Birsfelden | Verfahren zur gewinnung zellatmungsfoerdernder wirkstoffe aus kaelberblut |
| WO1988007406A1 (en) * | 1987-04-03 | 1988-10-06 | Gradient Pty. Ltd. | Improvements relating to separation of charged molecules |
| GB2225339A (en) * | 1988-11-15 | 1990-05-30 | Aligena Ag | Separating electrically charged macromolecular compounds by forced-flow membrane electrophoresis |
| US4963236A (en) * | 1989-03-08 | 1990-10-16 | Ampholife Technologies | Apparatus and methods for isoelectric focusing |
| US5160594A (en) * | 1989-03-08 | 1992-11-03 | Board Of Regents Of The University Of Texas System | Apparatus and methods for isoelectric focusing of amphoteric substances incorporating ion selective membranes in electrode chambers |
| WO1994022904A1 (en) * | 1993-04-07 | 1994-10-13 | Gradipore Limited | Improvements in protein separation |
| AUPP790898A0 (en) * | 1998-12-23 | 1999-01-28 | Life Therapeutics Limited | Renal dialysis |
| CN103616429A (zh) * | 2013-12-11 | 2014-03-05 | 郑秋月 | 乳品真蛋白的sds-page检测方法及其鉴定图谱库 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3330749A (en) * | 1958-02-11 | 1967-07-11 | Takeda Chemical Industries Ltd | Process for treating amino acid solution |
| US3355375A (en) * | 1962-10-09 | 1967-11-28 | Swift & Co | Apparatus for electrophoretic fractionation of ampholytes |
| US3325389A (en) * | 1963-02-28 | 1967-06-13 | Ionics | Process for pretreatment of whey to increase demineralization rate |
| JPS4918226B1 (es) * | 1970-08-01 | 1974-05-08 | ||
| FR2131859B1 (es) * | 1971-03-30 | 1974-03-08 | Rhone Poulenc Sa |
-
1974
- 1974-05-06 US US05/467,115 patent/US3972791A/en not_active Expired - Lifetime
-
1975
- 1975-04-30 CA CA225,941A patent/CA1043703A/en not_active Expired
- 1975-05-01 ZA ZA00752829A patent/ZA752829B/xx unknown
- 1975-05-05 GB GB18825/75A patent/GB1496726A/en not_active Expired
- 1975-05-05 DE DE19752519909 patent/DE2519909A1/de not_active Withdrawn
- 1975-05-06 ES ES437483A patent/ES437483A1/es not_active Expired
- 1975-05-06 BR BR3501/75A patent/BR7502739A/pt unknown
- 1975-05-06 BE BE156075A patent/BE828752A/xx unknown
- 1975-05-06 JP JP50053312A patent/JPS50153696A/ja active Pending
- 1975-05-06 NL NL7505304A patent/NL7505304A/xx not_active Application Discontinuation
- 1975-05-06 FR FR7514172A patent/FR2270267B1/fr not_active Expired
- 1975-05-06 CH CH582675A patent/CH622436A5/fr not_active IP Right Cessation
- 1975-05-06 IT IT68154/75A patent/IT1032822B/it active
Also Published As
| Publication number | Publication date |
|---|---|
| ES437483A1 (es) | 1977-05-16 |
| US3972791A (en) | 1976-08-03 |
| BE828752A (fr) | 1975-09-01 |
| BR7502739A (pt) | 1976-03-16 |
| GB1496726A (en) | 1977-12-30 |
| CA1043703A (en) | 1978-12-05 |
| NL7505304A (nl) | 1975-11-10 |
| DE2519909A1 (de) | 1975-11-20 |
| ZA752829B (en) | 1976-04-28 |
| FR2270267A1 (es) | 1975-12-05 |
| FR2270267B1 (es) | 1979-03-16 |
| JPS50153696A (es) | 1975-12-10 |
| IT1032822B (it) | 1979-06-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PL | Patent ceased |