WO1996011170A1 - Systeme de reutilisation d'eau - Google Patents
Systeme de reutilisation d'eau Download PDFInfo
- Publication number
- WO1996011170A1 WO1996011170A1 PCT/GB1994/002217 GB9402217W WO9611170A1 WO 1996011170 A1 WO1996011170 A1 WO 1996011170A1 GB 9402217 W GB9402217 W GB 9402217W WO 9611170 A1 WO9611170 A1 WO 9611170A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- water
- local
- management system
- point
- purification
- Prior art date
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 96
- 238000001816 cooling Methods 0.000 claims abstract description 8
- 239000002351 wastewater Substances 0.000 claims abstract description 7
- 238000000746 purification Methods 0.000 claims description 31
- 238000011084 recovery Methods 0.000 claims description 5
- 239000002352 surface water Substances 0.000 claims description 5
- 238000001223 reverse osmosis Methods 0.000 claims description 4
- 239000013618 particulate matter Substances 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims description 2
- 239000008213 purified water Substances 0.000 abstract description 9
- 239000004576 sand Substances 0.000 abstract description 2
- 239000004904 UV filter Substances 0.000 abstract 1
- 230000035622 drinking Effects 0.000 abstract 1
- -1 prefilter (41) Substances 0.000 abstract 1
- 238000011045 prefiltration Methods 0.000 abstract 1
- 239000002699 waste material Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000001556 precipitation Methods 0.000 description 4
- 239000013589 supplement Substances 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- 238000010612 desalination reaction Methods 0.000 description 2
- 239000003651 drinking water Substances 0.000 description 2
- 235000020188 drinking water Nutrition 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 238000010413 gardening Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 230000005180 public health Effects 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
Classifications
-
- 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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
-
- 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
- C02F1/004—Processes for the treatment of water whereby the filtration technique is of importance using large scale industrial sized filters
-
- 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
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B1/00—Methods or layout of installations for water supply
- E03B1/04—Methods or layout of installations for water supply for domestic or like local supply
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/001—Runoff or storm water
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/002—Grey water, e.g. from clothes washers, showers or dishwashers
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B1/00—Methods or layout of installations for water supply
- E03B1/04—Methods or layout of installations for water supply for domestic or like local supply
- E03B1/041—Greywater supply systems
- E03B2001/045—Greywater supply systems using household water
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B1/00—Methods or layout of installations for water supply
- E03B1/04—Methods or layout of installations for water supply for domestic or like local supply
- E03B1/041—Greywater supply systems
- E03B2001/047—Greywater supply systems using rainwater
-
- 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
- Y02A20/108—Rainwater harvesting
-
- 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
- Y02A20/30—Relating to industrial water supply, e.g. used for cooling
Definitions
- This invention relates to water conservation, and may find application in the recovery of water which has been used but which has not been heavily contaminated, by purifying it at a location at or close to the point of use, and returniinng the purified and cold drinking water to the point of use or a location close to the point of use.
- Purified and cold water is easily obtained from relatively pure sources, although in some regions of the world other sources are used, e.g. sea water which is desalinated. Virtually all relatively pure water sources are ultimately derived from precipitation, whether this is used directly (Surface rain or melt water, rivers) or indirectly (stored in aquifers). Direct use is limited by precipitation rate, and indirect use, while initially providing another supply, is also limited thereby in the long term, because otherwise the stored water is not replenished. Thus as many regions are experiencing, it is difficult to ensure that an increasing demand for clean cold water is still met satisfactorily, and the importation of water from other areas and/or the odoption of less pure water sources are strategies which come under consideration.
- the invention provides a local water management system comprising recovery means for recovering waste water from the first point of use and/or surface water from a collection point in the local vicinity of the first point, and storing it in a container, a water purification system in the local vicinity of the first point of use.
- the said at least one storage tank may be serially connected between the outlet of the purification system and the first point of use, or between the outlet of the purification system and a second point of use in the local vicinity of the first point.
- the returning means prefferably be arranged so that it also receives additional water from a remote source, for example mains water or even water from a desalination plant, so that when the input to the container or the output of water from the purification and cooling system is insufficient to meet the demand, this additional water acts as a supplement.
- a remote source for example mains water or even water from a desalination plant
- the additional water may be supplied to the point of use without storage. Alternatively however, it may be received and stored in the said tank of the returning means, as indicated in more detail hereafter.
- Pump means may be provided for pumping water from the recovery means through the purification system to the returning means and/or for supplying purified water to the first or second point of use.
- the purification system comprises at least one filter for removing paniculate matter and/or a reverse osmosis filter an/ or an ultra violet treatment unit Preferably all three types of filter are present.
- the osmosis filter should be placed to act after the particulate matter has been removed; the ultra violet filter will be located at any position relative to the other filters.
- the system will comprise an integral structure having at-leasi two separate compartments defined therein, the compartments being occupied by. or providing, at least two of the of the purification system, the container, and a said storage tank.
- the invention provides a module for use in a system according to the first aspect, comprising an integral structure having at least two compartments, at least one said compartment forming a water tank, and water purification system being located in at least one said compartment.
- Figure 1 is a schematic cross section of an integral structure incorporating a water purification system and water tanks which may be used for example in a domestic water management system according to the present system:
- FIG 2 is an enlarged and somewhat more detailed view of the purification system shown in figure 1;
- Figure 3 is a cross sectional view of a storage tank which may be used in the water management system of the present invention.
- FIG. 1 shows part of a water management system suitable for a house, for example.
- a tank 1 having three separate compartments each with an access lid 10 is shown fitted at and below ground level, and is placed in the vicinity of the house.
- This tank is typically of plastics or fibre glass material, although it could be constructed of other materials such as concrete.
- a pipe 20 serves to direct waste and/or surface water to a first compartment 2.
- the waste water will be typically be derived from the outlets of hand basins and baths within the house, but not more heavily soiled water from water closets.
- the surface water may be obtained from gutters, trapped gulleys, and/or ground drainage channels in forecourts, drives, car parking areas etc.
- a water purification system 4 is essentially located in compartment 3, but includes a course partical filter 41 located in compartment 2. (A course filter at the input to compartment 2 could replace or supplement filter 41).
- a pipe 42 directs the the water from the filter 41 via an ultra violet filter 43 and a pump 44 to a fine partical filter 45. typically a sand filter.
- the output of the filter 45 is connected through a reverse osmosis filter 46 to a storage tank defined by the third compartment 5.
- Both filters 45 and 46 have backwash facilities whereby accumulated contaminants may be flushed via pipes 49 to a conventional waste (soil drainage system).
- Compartment 2 has an overflow 21 for directing excess water to a conventional soil drainage system, if necessary, although the system would be designed so that under normal circumstances all water directed to the compartment 5 via the filter.
- Water from the third compartment is directed by pipes 51 and the pump 44 via a variable cooling system 47 direct to the cold taps within the building for drinking water as would be the supply from the water company.
- the supply would also be used for any other domestic purpose.
- the same supply would in any event continue direct to the cold water tank 6 ( Figure 3) in the house.
- the third compartment has an overflow 50 so that excess water supplied thereto may be led away, preferably to a soakaway so that ground water sources may be replenished; a non-return valve may be necessary.
- the tank 6 contains a lower ball valve 61 for receiving mains water through pipe 63 from the water company.
- the purified water from the third compartment 5 is pumped through pipe 51 to an upper ball valve 62. and so fed to the tank 6 in preference to the mains water.
- the upper ball valve may contain an actuator switch for operating the pump 44.
- the purification system is easily accessible for servicing, and in view of this and the fact that electrical components may be involved, it may be found preferable omit both the central compartment 3 and the purification system, and locate the latter above ground, for example in a separate compartment. Alternatively, the whole of the structure 1 could be placed above ground. For larger installations, for example large office blocks, industrial units and factories, it would be advantageous to provide and install the tanks and/or the different parts of the water purification system as individual components.
- the mains water input has been described as passing through the tank 6.
- the tank could be omitted and the purified water used to supplement the mains supply at the point of use.
- the pump will produce sufficient pressure to allow the purified water to be injected at the point of use.
- the above system installation would in any event comply with the relevant water companies and the public health regulations to date.
- the purified water can additionally or alternatively be supplied to a different point of use
- the system may be considered to be particularly advantageous when fresh water supplies are scarce, and when even the water supplied to the first point of use may be derived from a costly source such as a desalination plant.
- the invention has unlimited applications.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Toxicology (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9404868A GB2278388B (en) | 1993-05-27 | 1994-03-14 | Recycling and purification of grey and surface water for drinking and other uses |
EP94928967A EP0785912A1 (fr) | 1994-10-11 | 1994-10-11 | Systeme de reutilisation d'eau |
PCT/GB1994/002217 WO1996011170A1 (fr) | 1993-05-27 | 1994-10-11 | Systeme de reutilisation d'eau |
AU78188/94A AU7818894A (en) | 1994-10-11 | 1994-10-11 | Water reuse system |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB939310958A GB9310958D0 (en) | 1993-05-27 | 1993-05-27 | Water conservation |
PCT/GB1994/002217 WO1996011170A1 (fr) | 1993-05-27 | 1994-10-11 | Systeme de reutilisation d'eau |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1996011170A1 true WO1996011170A1 (fr) | 1996-04-18 |
Family
ID=26302957
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/GB1994/002217 WO1996011170A1 (fr) | 1993-05-27 | 1994-10-11 | Systeme de reutilisation d'eau |
Country Status (2)
Country | Link |
---|---|
GB (1) | GB2278388B (fr) |
WO (1) | WO1996011170A1 (fr) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2124666A1 (es) * | 1996-12-10 | 1999-02-01 | C S I C | Procedimiento para desinfectar aguas residuales mediante aplicacion de campos electrostaticos. |
WO1999033752A1 (fr) * | 1997-12-29 | 1999-07-08 | Povl Kaas | Procede et systeme de purification de l'eau |
CN106430676A (zh) * | 2016-10-11 | 2017-02-22 | 机械工业仪器仪表综合技术经济研究所 | 一种绿色节水检验检测实验室 |
US10059613B1 (en) * | 2012-07-23 | 2018-08-28 | Peter F. Santina | Removal of contaminants from water |
CN108640381A (zh) * | 2018-02-08 | 2018-10-12 | 刘肖俊 | 一种具有优良能源利用效率的市政供水系统 |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2278388B (en) * | 1993-05-27 | 1996-08-28 | Hynes Patricia R | Recycling and purification of grey and surface water for drinking and other uses |
FR2729168B1 (fr) * | 1995-01-11 | 1997-04-11 | Boulais Alain | Recuperation et reutilisation d'eau de pluie. |
GB9602989D0 (en) * | 1996-02-14 | 1996-04-10 | Anglian Water Services Ltd | System for grey water reuse |
NO961393D0 (no) * | 1996-04-03 | 1996-04-03 | Klean As | Fremgangsmåte og anordning for rensing av vann |
DE19740642B4 (de) * | 1997-09-16 | 2004-03-11 | Hansgrohe Ag | Verfahren und Vorrichtung zur Wiederverwertung von Grauwasser |
GB0006579D0 (en) * | 2000-03-17 | 2000-05-10 | Hynes Patricia R | Salad washing |
GB2369400A (en) * | 2000-11-28 | 2002-05-29 | Stuart Summerfield | Underground water storage system |
GB2380474B (en) * | 2001-10-02 | 2003-09-10 | Hynes Patricia Rosemary | Water processing apparatus |
US7568356B2 (en) | 2004-08-18 | 2009-08-04 | Hillberg Innovation An | Method and device for transferring water from a source to a consumer |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3456803A (en) * | 1967-02-09 | 1969-07-22 | Culligan Inc | Drinking water treatment apparatus |
JPS56136693A (en) * | 1980-03-26 | 1981-10-26 | Mitsubishi Heavy Ind Ltd | Waste water treating apparatus |
EP0156671A1 (fr) * | 1984-02-17 | 1985-10-02 | Diesel Energie | Dispositif de refroidissement et purification d'eau de citerne ou de réserve |
US4599166A (en) * | 1984-05-18 | 1986-07-08 | Rudolf Gesslauer | Ozone drinking water purification apparatus |
US4827727A (en) * | 1988-02-08 | 1989-05-09 | Caracciolo Louis D | Carcass chiller and sterilizer |
GB2249121A (en) * | 1990-10-25 | 1992-04-29 | Richard John Hampden Lucy | Water supply system |
GB2269417A (en) * | 1992-08-07 | 1994-02-09 | Francis Barlow | Augmented domestic water system |
GB2278388A (en) * | 1993-05-27 | 1994-11-30 | Hynes Patricia R | Water conservation/recovery system |
-
1994
- 1994-03-14 GB GB9404868A patent/GB2278388B/en not_active Expired - Fee Related
- 1994-10-11 WO PCT/GB1994/002217 patent/WO1996011170A1/fr not_active Application Discontinuation
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3456803A (en) * | 1967-02-09 | 1969-07-22 | Culligan Inc | Drinking water treatment apparatus |
JPS56136693A (en) * | 1980-03-26 | 1981-10-26 | Mitsubishi Heavy Ind Ltd | Waste water treating apparatus |
EP0156671A1 (fr) * | 1984-02-17 | 1985-10-02 | Diesel Energie | Dispositif de refroidissement et purification d'eau de citerne ou de réserve |
US4599166A (en) * | 1984-05-18 | 1986-07-08 | Rudolf Gesslauer | Ozone drinking water purification apparatus |
US4827727A (en) * | 1988-02-08 | 1989-05-09 | Caracciolo Louis D | Carcass chiller and sterilizer |
GB2249121A (en) * | 1990-10-25 | 1992-04-29 | Richard John Hampden Lucy | Water supply system |
GB2269417A (en) * | 1992-08-07 | 1994-02-09 | Francis Barlow | Augmented domestic water system |
GB2278388A (en) * | 1993-05-27 | 1994-11-30 | Hynes Patricia R | Water conservation/recovery system |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 6, no. 11 (C - 088) 22 January 1982 (1982-01-22) * |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2124666A1 (es) * | 1996-12-10 | 1999-02-01 | C S I C | Procedimiento para desinfectar aguas residuales mediante aplicacion de campos electrostaticos. |
WO1999033752A1 (fr) * | 1997-12-29 | 1999-07-08 | Povl Kaas | Procede et systeme de purification de l'eau |
US6451209B1 (en) | 1997-12-29 | 2002-09-17 | Povl Kaas | Method and a system for the treatment of water |
US10059613B1 (en) * | 2012-07-23 | 2018-08-28 | Peter F. Santina | Removal of contaminants from water |
CN106430676A (zh) * | 2016-10-11 | 2017-02-22 | 机械工业仪器仪表综合技术经济研究所 | 一种绿色节水检验检测实验室 |
CN108640381A (zh) * | 2018-02-08 | 2018-10-12 | 刘肖俊 | 一种具有优良能源利用效率的市政供水系统 |
Also Published As
Publication number | Publication date |
---|---|
GB2278388A (en) | 1994-11-30 |
GB2278388B (en) | 1996-08-28 |
GB2278388A8 (en) | 1996-09-30 |
GB9404868D0 (en) | 1994-04-27 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US6887375B2 (en) | System to save and recycle domestic water | |
US7163619B2 (en) | Water supply system and multifunctional water supply tank | |
WO1996011170A1 (fr) | Systeme de reutilisation d'eau | |
CN102505728A (zh) | 雨水资源化利用成套技术 | |
Manan et al. | Water pinch analysis for an urban system: a case study on the Sultan Ismail Mosque at the Universiti Teknologi Malaysia (UTM) | |
US20050056581A1 (en) | System for recycling washing machine water | |
JP2010106605A (ja) | 雨水利用システムおよび雨水利用方法 | |
KR100749400B1 (ko) | 우수의 중수 재활용 시스템 | |
CN205636930U (zh) | 一种净水器废水回收利用系统 | |
JP3567011B2 (ja) | 中水道の循環システム及び貯水槽 | |
KR101133370B1 (ko) | 에너지 절약형 중수처리 및 공급시스템 | |
JP2003088891A (ja) | 建造物内の使用済み水を甦生する循環水処理システム | |
EP1296895A2 (fr) | Unite de traitement d'eau | |
Asano et al. | The role of wastewater reclamation and reuse in the USA | |
JP4035201B2 (ja) | 雨水及び中水の循環利用装置 | |
KR100306118B1 (ko) | 중앙 정수 시스템 | |
JP2011140857A (ja) | 雨水利用システム | |
EP0785912A1 (fr) | Systeme de reutilisation d'eau | |
JP4597420B2 (ja) | ディスポーザ対応型のハイブリッド処理槽 | |
JPH10219759A (ja) | 雨水利用システム | |
CN211226720U (zh) | 家用中水回用过滤装置 | |
GB2331323A (en) | Domestic water supply system | |
WO1997030233A1 (fr) | Systeme de reutilisation de l'eau non potable | |
JP2001232363A (ja) | 排水リサイクルシステム | |
JP3302000B2 (ja) | ハイブリッド浄化槽 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AT AU BB BG BR BY CA CH CN CZ DE DK ES FI GB HU JP KP KR KZ LK LU LV MG MN MW NL NO NZ PL PT RO RU SD SE SK UA US UZ VN |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN ML MR NE SN TD TG |
|
DFPE | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101) | ||
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 1994928967 Country of ref document: EP |
|
REG | Reference to national code |
Ref country code: DE Ref legal event code: 8642 |
|
WWP | Wipo information: published in national office |
Ref document number: 1994928967 Country of ref document: EP |
|
NENP | Non-entry into the national phase |
Ref country code: CA |
|
WWW | Wipo information: withdrawn in national office |
Ref document number: 1994928967 Country of ref document: EP |