DE2428323C2 - - Google Patents
Info
- Publication number
- DE2428323C2 DE2428323C2 DE2428323A DE2428323A DE2428323C2 DE 2428323 C2 DE2428323 C2 DE 2428323C2 DE 2428323 A DE2428323 A DE 2428323A DE 2428323 A DE2428323 A DE 2428323A DE 2428323 C2 DE2428323 C2 DE 2428323C2
- Authority
- DE
- Germany
- Prior art keywords
- water
- particles
- line
- valve
- chamber
- 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
Links
- 239000002245 particle Substances 0.000 claims description 148
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 112
- 230000008929 regeneration Effects 0.000 claims description 49
- 238000011069 regeneration method Methods 0.000 claims description 49
- 239000011347 resin Substances 0.000 claims description 35
- 229920005989 resin Polymers 0.000 claims description 35
- 238000005342 ion exchange Methods 0.000 claims description 33
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 28
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 22
- 239000000460 chlorine Substances 0.000 claims description 22
- 229910052801 chlorine Inorganic materials 0.000 claims description 22
- 238000000034 method Methods 0.000 claims description 22
- 239000003456 ion exchange resin Substances 0.000 claims description 19
- 229920003303 ion-exchange polymer Polymers 0.000 claims description 19
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 claims description 16
- 229910052742 iron Inorganic materials 0.000 claims description 14
- 239000000126 substance Substances 0.000 claims description 13
- 241000894006 Bacteria Species 0.000 claims description 8
- 235000019640 taste Nutrition 0.000 claims description 6
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 5
- 238000011010 flushing procedure Methods 0.000 claims description 4
- 230000005484 gravity Effects 0.000 claims description 2
- 239000012267 brine Substances 0.000 description 43
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 43
- 239000007788 liquid Substances 0.000 description 34
- 239000000463 material Substances 0.000 description 29
- 125000002091 cationic group Chemical group 0.000 description 16
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 9
- 238000011001 backwashing Methods 0.000 description 9
- 239000011575 calcium Substances 0.000 description 9
- 229910052791 calcium Inorganic materials 0.000 description 9
- 230000008901 benefit Effects 0.000 description 8
- 150000003839 salts Chemical class 0.000 description 8
- 239000000243 solution Substances 0.000 description 8
- 230000008859 change Effects 0.000 description 7
- 150000002500 ions Chemical class 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 238000005259 measurement Methods 0.000 description 6
- 238000012856 packing Methods 0.000 description 6
- 229910001415 sodium ion Inorganic materials 0.000 description 6
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 5
- 230000002378 acidificating effect Effects 0.000 description 5
- 239000012530 fluid Substances 0.000 description 5
- 239000013505 freshwater Substances 0.000 description 5
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 5
- 238000003860 storage Methods 0.000 description 5
- 150000003464 sulfur compounds Chemical class 0.000 description 5
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 4
- 229910001424 calcium ion Inorganic materials 0.000 description 4
- 239000012528 membrane Substances 0.000 description 4
- 229920001467 poly(styrenesulfonates) Polymers 0.000 description 4
- 239000011593 sulfur Substances 0.000 description 4
- 229910052717 sulfur Inorganic materials 0.000 description 4
- 239000003729 cation exchange resin Substances 0.000 description 3
- 239000000356 contaminant Substances 0.000 description 3
- 238000011109 contamination Methods 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 235000019645 odor Nutrition 0.000 description 3
- 230000000704 physical effect Effects 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 239000008237 rinsing water Substances 0.000 description 3
- 230000035943 smell Effects 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- MYRTYDVEIRVNKP-UHFFFAOYSA-N 1,2-Divinylbenzene Chemical compound C=CC1=CC=CC=C1C=C MYRTYDVEIRVNKP-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 125000000129 anionic group Chemical group 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000002301 combined effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000005549 size reduction Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 210000002268 wool Anatomy 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical class OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 1
- 241001342895 Chorus Species 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- VEUACKUBDLVUAC-UHFFFAOYSA-N [Na].[Ca] Chemical group [Na].[Ca] VEUACKUBDLVUAC-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000005576 amination reaction Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- ZMBBMVZDLKJCRJ-UHFFFAOYSA-N azane;1,2,3-trimethylbenzene Chemical group N.CC1=CC=CC(C)=C1C ZMBBMVZDLKJCRJ-UHFFFAOYSA-N 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 229940023913 cation exchange resins Drugs 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000007265 chloromethylation reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- HAORKNGNJCEJBX-UHFFFAOYSA-N cyprodinil Chemical compound N=1C(C)=CC(C2CC2)=NC=1NC1=CC=CC=C1 HAORKNGNJCEJBX-UHFFFAOYSA-N 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000000796 flavoring agent Substances 0.000 description 1
- 235000019634 flavors Nutrition 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000011236 particulate material Substances 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000012047 saturated solution Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000008403 very hard water Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 230000037303 wrinkles Effects 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
- B01J49/00—Regeneration or reactivation of ion-exchangers; Apparatus therefor
- B01J49/75—Regeneration or reactivation of ion-exchangers; Apparatus therefor of water softeners
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treatment Of Water By Ion Exchange (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US05/370,235 US3960721A (en) | 1973-06-15 | 1973-06-15 | Fluid treating apparatus and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE2428323A1 DE2428323A1 (de) | 1975-01-09 |
| DE2428323C2 true DE2428323C2 (enExample) | 1987-06-19 |
Family
ID=23458797
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19742428323 Granted DE2428323A1 (de) | 1973-06-15 | 1974-06-12 | Verfahren und einrichtung zur behandlung von fluessigkeiten |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US3960721A (enExample) |
| JP (1) | JPS5837036B2 (enExample) |
| BE (1) | BE816183A (enExample) |
| CA (1) | CA1037621A (enExample) |
| DE (1) | DE2428323A1 (enExample) |
| FR (1) | FR2233091B1 (enExample) |
| GB (1) | GB1479041A (enExample) |
| IT (1) | IT1011971B (enExample) |
| NL (1) | NL7407792A (enExample) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117679786A (zh) * | 2023-11-22 | 2024-03-12 | 江苏森茂能源发展有限公司 | 一种防泄漏的高密封油气回收吸附装置 |
Families Citing this family (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2439303C2 (de) * | 1974-08-16 | 1984-07-19 | Hager & Elsässer GmbH, 7000 Stuttgart | Vorrichtung zum Abtrennen von feinverteilten emulgierten und/oder gelösten Stoffen sowie Feststoffen aus Flüssigkeiten |
| US4238325A (en) * | 1978-09-20 | 1980-12-09 | Fluid Power Research, Inc. | Fluid treating apparatus and method |
| US4233158A (en) * | 1978-11-01 | 1980-11-11 | Wachsmuth William A | Liquid treatment tank having a volume compensating structure for use with volume variable liquid treatment material |
| DE2950875A1 (de) * | 1979-12-18 | 1981-07-02 | Bayer Ag, 5090 Leverkusen | Gegenstromverfahren zur behandlung von fluessigkeiten mit adsorptionsmitteln und vorrichtung zur durchfuehrung das verfahrens |
| US4368123A (en) * | 1981-08-31 | 1983-01-11 | Stanley Bedford F | Regenerative counter top water conditioner |
| US4427549A (en) | 1982-08-19 | 1984-01-24 | Kinetico, Inc. | Deionization method and apparatus |
| GB2153698B (en) * | 1984-02-01 | 1987-10-21 | Eugene Foessel | Automatic regeneration of ion exchange cartridges |
| FR2573669B1 (fr) * | 1984-11-28 | 1989-08-04 | Degremont | Procede pour le traitement de liquides sur matieres granulaires. |
| US5060167A (en) * | 1989-06-26 | 1991-10-22 | Bruner Corporation | Electronic programmable water treatment controller |
| US5378370A (en) * | 1990-03-15 | 1995-01-03 | Wm. R. Hague, Inc. | Water treatment tank |
| GB2260277A (en) * | 1991-10-11 | 1993-04-14 | Ecowater Systems Inc | Water softening system |
| DE4239748C1 (de) * | 1992-11-26 | 1994-02-10 | Guetling Gmbh | Retardationsanlage mit Druckluft-Membranpumpe und Hubzähleinrichtung |
| EP0599003A1 (de) * | 1992-11-26 | 1994-06-01 | Gütling Gmbh | Vorrichtung und Verfahren zur Regeneration einer Ionenaustauscheranlage |
| DE19731092A1 (de) * | 1997-07-19 | 1999-01-21 | Brita Wasserfilter | Einrichtung für die Anzeige der Erschöpfung eines Reinigungsmittels |
| US6103108A (en) * | 1998-09-24 | 2000-08-15 | Kohlenberg; Larry D. | Water treatment apparatus |
| US6582595B1 (en) * | 1999-09-28 | 2003-06-24 | Alex S. Peabody | Compact water conditioning apparatus |
| US20040251187A1 (en) * | 2003-10-20 | 2004-12-16 | Chernoff Larry John | Gravity feed brining system and water conditioning systems using the same |
| PT2532760T (pt) * | 2011-06-06 | 2020-06-25 | Atotech Deutschland Gmbh | Dispositivo e método para recuperação de níquel a partir de um fluido de banho de niquelagem |
| CN103274493A (zh) * | 2013-06-19 | 2013-09-04 | 王斌 | 一种管道除垢装置 |
| CN105880222A (zh) * | 2014-11-15 | 2016-08-24 | 赵坚强 | 一种新型、环保高能态材料阻垢、除锈、催化处理器 |
| CN114681979B (zh) * | 2020-12-31 | 2023-12-29 | 太湖金张科技股份有限公司 | 一种供胶过滤装置 |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE767790C (de) * | 1937-02-04 | 1953-05-18 | Permutit Ag | Verfahren zum Wiederbeleben von hintereinandergeschalteten Austauschfiltern |
| US2304453A (en) * | 1939-06-09 | 1942-12-08 | Gudmundsen Stratton Lab Inc | Water softener |
| NL273702A (enExample) * | 1961-05-29 | 1900-01-01 | ||
| US3240699A (en) * | 1961-11-02 | 1966-03-15 | Union Tank Car Co | Upflow regeneration method |
| DE1442689C3 (de) * | 1963-11-29 | 1978-11-30 | Bayer Ag, 5090 Leverkusen | Verfahren zur Behandlung von Flüssigkeiten mit Ionenaustauschern |
| US3509998A (en) * | 1966-05-19 | 1970-05-05 | William H Pellett | Automatic regenerating apparatus for water softener |
| US3570520A (en) * | 1969-01-15 | 1971-03-16 | Fiorello Sodi | Volumetric valve |
| US3529726A (en) * | 1969-09-15 | 1970-09-22 | Gordon J Keenan | Portable water filter unit |
-
1973
- 1973-06-15 US US05/370,235 patent/US3960721A/en not_active Expired - Lifetime
-
1974
- 1974-06-11 BE BE145297A patent/BE816183A/xx not_active IP Right Cessation
- 1974-06-11 NL NL7407792A patent/NL7407792A/xx not_active Application Discontinuation
- 1974-06-12 DE DE19742428323 patent/DE2428323A1/de active Granted
- 1974-06-14 FR FR7420830A patent/FR2233091B1/fr not_active Expired
- 1974-06-14 GB GB26552/74A patent/GB1479041A/en not_active Expired
- 1974-06-14 CA CA202,485A patent/CA1037621A/en not_active Expired
- 1974-06-14 IT IT7468874A patent/IT1011971B/it active
- 1974-06-14 JP JP49068078A patent/JPS5837036B2/ja not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117679786A (zh) * | 2023-11-22 | 2024-03-12 | 江苏森茂能源发展有限公司 | 一种防泄漏的高密封油气回收吸附装置 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5049168A (enExample) | 1975-05-01 |
| FR2233091B1 (enExample) | 1978-01-13 |
| JPS5837036B2 (ja) | 1983-08-13 |
| FR2233091A1 (enExample) | 1975-01-10 |
| BE816183A (fr) | 1974-09-30 |
| GB1479041A (en) | 1977-07-06 |
| DE2428323A1 (de) | 1975-01-09 |
| AU7015074A (en) | 1975-12-18 |
| IT1011971B (it) | 1977-02-10 |
| US3960721A (en) | 1976-06-01 |
| CA1037621A (en) | 1978-08-29 |
| NL7407792A (enExample) | 1974-12-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE2428323C2 (enExample) | ||
| EP3749612B1 (de) | Wasser-filterpatrone mit tank-verkalkungsschutz | |
| EP0050813B1 (de) | Gegenstrom-Adsorptionsfilter zur Behandlung von Flüssigkeiten und Verfahren zum Betreiben des Filters | |
| EP1498060A1 (de) | Filterpatrone für wasserbehälter von kaffeemaschinen | |
| EP2108002A2 (de) | Wasserfiltervorrichtung mit stellorgan zur einstellung eines verschnittverhältnisses | |
| DE4238532A1 (de) | Verfahren und Vorrichtung zum Entsalzen wäßriger Lösungen mittels Ionenaustauschermassen | |
| EP0347577B1 (de) | Verfahren zum Behandeln von Ionenaustauschermassen, insbesondere zum Regenerieren derselben nach Enthärtung und Entsalzung wässriger Lösungen | |
| DE2950875A1 (de) | Gegenstromverfahren zur behandlung von fluessigkeiten mit adsorptionsmitteln und vorrichtung zur durchfuehrung das verfahrens | |
| DE2349777A1 (de) | Gasfilter | |
| EP0082520A2 (de) | Vorrichtung zum Abscheiden von Suspensa aus einem unter Druck stehenden Fluid | |
| EP0212222B1 (de) | Ionenaustauschvorrichtung | |
| DE611396C (de) | Rahmenfilterpresse | |
| EP2836465B1 (de) | Verfahren zum betrieb einer wasserbehandlungsanlage | |
| DE1517572A1 (de) | Wasserenthaertungsanlage | |
| DE2221561A1 (de) | Verfahren zur durchfuehrung von ionenaustausch- und adsorptionsvorgaengen unter verwendung eines gegenstromfilters | |
| DE60035193T2 (de) | Behälter zur enthärtung von wasser | |
| EP0554549B1 (de) | Dampfbügeleisen mit austauschbarem Filtereinsatz | |
| DE102006009522A1 (de) | Kombinationsverfahren zur Demineralisation von Wasser | |
| DE3625337A1 (de) | Wasserenthaertungsanlage | |
| AT360443B (de) | Verfahren und vorrichtung zur reinigung von verschmutztem wasser | |
| DE1542389C3 (de) | Verfahren zum physikalischen und/oder chemischen Stoffaustausch in flüssiger oder gasförmiger Phase mit körniger Behandlungsmasse | |
| DE2411828A1 (de) | Verfahren zum adsorbieren von in einer waessrigen fluessigkeit enthaltenen fremdstoffen an koerniger aktivkohle | |
| DE2419031A1 (de) | Verfahren zur aufbereitung von fluessigkeiten und vorrichtung zur durchfuehrung des verfahrens | |
| DE1249220B (enExample) | ||
| DE461537C (de) | Wasserenthaertungsapparat |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8110 | Request for examination paragraph 44 | ||
| 8126 | Change of the secondary classification | ||
| D2 | Grant after examination | ||
| 8364 | No opposition during term of opposition | ||
| 8339 | Ceased/non-payment of the annual fee |