EP0424712B1 - Apparatus for dosage and milling - Google Patents

Apparatus for dosage and milling Download PDF

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Publication number
EP0424712B1
EP0424712B1 EP90119198A EP90119198A EP0424712B1 EP 0424712 B1 EP0424712 B1 EP 0424712B1 EP 90119198 A EP90119198 A EP 90119198A EP 90119198 A EP90119198 A EP 90119198A EP 0424712 B1 EP0424712 B1 EP 0424712B1
Authority
EP
European Patent Office
Prior art keywords
screw
beater
bars
axis
spiral
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
Application number
EP90119198A
Other languages
German (de)
French (fr)
Other versions
EP0424712A1 (en
Inventor
Marcel Buhler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Societe des Produits Nestle SA
Nestle SA
Original Assignee
Societe des Produits Nestle SA
Nestle SA
Priority date (The priority date 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 date listed.)
Filing date
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Publication of EP0424712A1 publication Critical patent/EP0424712A1/en
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Publication of EP0424712B1 publication Critical patent/EP0424712B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C19/00—Other disintegrating devices or methods
    • B02C19/22—Crushing mills with screw-shaped crushing means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
    • B02C13/10—Disintegrating by mills having rotary beater elements ; Hammer mills with horizontal rotor shaft and axial flow
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
    • B02C13/13—Disintegrating by mills having rotary beater elements ; Hammer mills with horizontal rotor shaft and combined with sifting devices, e.g. for making powdered fuel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C9/00—Other milling methods or mills specially adapted for grain

Definitions

  • the present invention relates to an apparatus for metering and grinding friable material according to the preamble of claim 1.
  • Such an apparatus is known from GB-A-2169818.
  • the hammer mill which comprises a rotor formed by a rotary axis to which are connected radial arms which beat the material to be ground against a cylindrical sieve which surrounds at at least partially the rotor.
  • a mill comprising a rotor formed by a rotary axis having at each end a flange, bars parallel to the axis being fixed at the periphery of the flanges and the rotor rotating either always in the same direction or alternately in one direction and in the other inside a cylindrical screen.
  • the screw doser is known, for example with an archimedean screw or a spiral screw.
  • a dosing screw can be placed in a cylindrical casing or tube open at its downstream end, a feed hopper being provided at the upstream end of the tube.
  • US-A-4752036 describes a granulating apparatus comprising a rotor rotating above a sieve through which it forces the passage of a material to granulate, the rotor being formed in particular of beating bars comprised between two flanges and integral with their periphery, the bars being arranged parallel to the axis of rotation and equidistant, and the flanges each having a cylindrical surface on which is disposed a helical spiral intended to bring back towards the inside of the rotor particles capable of escaping through a space left free between said flanges and a fixed sealing housing which surrounds them.
  • the object of the present invention is to propose a device for dosing and grinding friable material which has a simplicity of construction comparable to that of a device of the screw metering type while having an efficiency comparable to that of a device of the hammer mill type, for example.
  • the apparatus according to the present invention intended for dosing and grinding a friable material, comprises a dosing screw for dosing the material with a beater, a beater formed of bars integral with the helical periphery of the downstream end of the screw, parallel to the axis of the screw and distributed along the vertices of a regular polygon centered on this axis, a cylindrical housing enveloping the screw, and a cylindrical screen extending the housing and at least partially enveloping the beater .
  • Such a device effectively combines surprisingly qualities that one could not expect until now from the series connection of at least two devices, one of which, the mill, was generally of a sophisticated construction.
  • the present apparatus of simple and robust construction, has proved to be particularly effective for the regular dosing and grinding of various friable materials, such as are encountered for example in the food industry, in particular starchy grains or cereals. , fragments of dehydrated mass, or flakes of dehydrated mash on a cylinder.
  • the dosing screw can be produced in various forms such as an archimedean screw, a screw with a solid cylindrical body having a helical projection on its periphery, or a hollow screw with a free helical spiral, in other words a spiral screw , for example.
  • the dosing screw is made in the form of a spiral screw, the spiral itself may have various sections, circular, square or other, depending on the nature of the material to be dosed.
  • the bars of the beater can have various sections, circular, square or other, depending on the nature of the material to be ground and the size of the mesh of the sieve, in particular.
  • the dosing screw is produced in the form of a spiral screw with a square section and the bars of the beater have a circular section of diameter less than or equal to the side of the square section of the spiral.
  • downstream ends of the bars end in the same plane perpendicular to the axis of the dosing screw and can be fixed in notches provided on the periphery of a circular flange, for example.
  • the device is provided with a feed hopper at the upstream end of the dosing screw and the latter is connected to a drive means such as an electric motor, for example.
  • the apparatus comprises a dosing screw 1, a beater 2 formed of bars 3 secured to the helical periphery of the downstream end of the screw 1, a cylindrical housing 5 which envelops the screw 1, and a cylindrical screen 6 which extends the cylindrical casing 5 and which envelops the beater 2.
  • the device is provided with a feed hopper 7 at the upstream end of the dosing screw 1.
  • the latter is connected to an electric motor 8 via a rotary axis 9 to which it is fixed.
  • the dosing screw 1 is produced in the form of a spiral screw with a square section.
  • the bars 3 of the beater 2 are parallel to the axis 4 of the dosing screw 1. They have a circular section of smaller diameter than the side of the square section of the spiral 1.
  • Their upstream ends 10 are housed and welded in cylindrical housings practiced in the very spiral.
  • the downstream ends 11 of the bars 3 end in the same plane and are fixed and welded in housings or notches formed in the periphery of a circular flange 12, coaxial and perpendicular to the axis 4 of the spiral screw 1.
  • the bars 3 are six in number and they are distributed according to the vertices of a hexagon.

Landscapes

  • Food Science & Technology (AREA)
  • Engineering & Computer Science (AREA)
  • Disintegrating Or Milling (AREA)
  • Crushing And Pulverization Processes (AREA)
  • General Preparation And Processing Of Foods (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
  • Crushing And Grinding (AREA)
  • Beans For Foods Or Fodder (AREA)
  • Apparatuses For Bulk Treatment Of Fruits And Vegetables And Apparatuses For Preparing Feeds (AREA)
  • Food-Manufacturing Devices (AREA)
  • Feed For Specific Animals (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)

Abstract

Apparatus for controlled delivery and for milling comprising a controlled-delivery screw (1), a beater (2) formed by bars (3) attached to the helical perimeter of the downstream end of the screw (1), and a cylindrical screen (6) lying in the extension of the cylindrical casing (5) and surrounding the beater (2). <IMAGE>

Description

La présente invention a pour objet un appareil de dosage et mouture de matière friable selon le préambule de la revendication 1. Un tel appareil est connu de GB-A-2169818.The present invention relates to an apparatus for metering and grinding friable material according to the preamble of claim 1. Such an apparatus is known from GB-A-2169818.

Parmi les appareils destinés à la mouture de matériaux divers, on connaît, par exemple, le moulin à marteaux qui comprend un rotor formé d'un axe rotatif auquel sont reliés des bras radiaux qui battent le matériau à moudre contre un tamis cylindrique qui entoure au moins partiellement le rotor.Among the apparatuses intended for the milling of various materials, one knows, for example, the hammer mill which comprises a rotor formed by a rotary axis to which are connected radial arms which beat the material to be ground against a cylindrical sieve which surrounds at at least partially the rotor.

On connaît également un moulin comprenant un rotor formé d'un axe rotatif présentant à chaque extrémité un flasque, des barreaux parallèles à l'axe étant fixés à la périphérie des flasques et le rotor tournant soit toujours dans le même sens soit alternativement dans un sens et dans l'autre à l'intérieur d'un tamis cylindrique.There is also known a mill comprising a rotor formed by a rotary axis having at each end a flange, bars parallel to the axis being fixed at the periphery of the flanges and the rotor rotating either always in the same direction or alternately in one direction and in the other inside a cylindrical screen.

Ces appareils de mouture ou moulins connus sont généralement de construction sophistiquée. Pour obtenir une mouture ou granulation régulière à l'aide de ces appareils connus, il est nécessaire de réaliser un dosage régulier, de manière à assurer une charge constante et un niveau constant sur le moulin.These known milling machines or mills are generally of sophisticated construction. To obtain a regular grinding or granulation using these known devices, it is necessary to carry out a regular dosage, so as to ensure a constant load and a constant level on the mill.

Parmi les appareils de dosage que l'on peut utiliser pour alimenter ces moulins connus, on connaît par exemple le doseur à vis, notamment à vis d'archimède ou à vis spirale. Une telle vis doseuse peut être disposée dans un boîtier cylindrique ou tube ouvert à son extrémité aval, une trémie d'alimentation étant prévue à l'extrémité amont du tube.Among the metering devices which can be used to supply these known mills, the screw doser is known, for example with an archimedean screw or a spiral screw. Such a dosing screw can be placed in a cylindrical casing or tube open at its downstream end, a feed hopper being provided at the upstream end of the tube.

US-A-4752036 décrit un appareil de granulation comprenant un rotor tournant au-dessus d'un tamis au travers duquel il force le passage d'un matériau à granuler, le rotor étant formé notamment de barreaux batteurs compris entre deux flasques et solidaires de leur pourtour, les barreaux étant disposés parallèlement à l'axe de rotation et équidistants, et les flasques présentant chacun une surface cylindrique sur laquelle est disposée une spirale hélicoïdale destinée à ramener vers l'intérieur du rotor des particules susceptibles de s'échapper par un espace laissé libre entre lesdits flasques et un boîtier d'étanchéité fixe qui les entoure.US-A-4752036 describes a granulating apparatus comprising a rotor rotating above a sieve through which it forces the passage of a material to granulate, the rotor being formed in particular of beating bars comprised between two flanges and integral with their periphery, the bars being arranged parallel to the axis of rotation and equidistant, and the flanges each having a cylindrical surface on which is disposed a helical spiral intended to bring back towards the inside of the rotor particles capable of escaping through a space left free between said flanges and a fixed sealing housing which surrounds them.

La présente invention a pour but de proposer un appareil de dosage et mouture de matière friable qui présente une simplicité de construction comparable à celle d'un appareil du type doseur à vis tout en ayant une efficacité comparable à celle d'un appareil du type moulin à marteau, par exemple.The object of the present invention is to propose a device for dosing and grinding friable material which has a simplicity of construction comparable to that of a device of the screw metering type while having an efficiency comparable to that of a device of the hammer mill type, for example.

A cet effet, l'appareil selon la présente invention, destiné au dosage et à la mouture d'une matière friable, comprend une vis doseuse pour dosage de la matière à un battoir, un battoir formé de barreaux solidaires du pourtour hélicoïdal de l'extrémité aval de la vis, parallèles à l'axe de la vis et répartis selon les sommets d'un polygone régulier centré sur cet axe, un boîtier cylindrique enveloppant la vis, et un tamis cylindrique prolongeant le boîtier et enveloppant au moins partiellement le battoir.To this end, the apparatus according to the present invention, intended for dosing and grinding a friable material, comprises a dosing screw for dosing the material with a beater, a beater formed of bars integral with the helical periphery of the downstream end of the screw, parallel to the axis of the screw and distributed along the vertices of a regular polygon centered on this axis, a cylindrical housing enveloping the screw, and a cylindrical screen extending the housing and at least partially enveloping the beater .

Un tel appareil réunit effectivement de manière surprenante des qualités que l'on ne pouvait jusqu'ici attendre que du branchement en série d'au moins deux appareils, dont l'un, le moulin, était généralement d'une construction sophistiquée.Such a device effectively combines surprisingly qualities that one could not expect until now from the series connection of at least two devices, one of which, the mill, was generally of a sophisticated construction.

Le présent appareil, de construction simple et robuste, s'est révélé particulièrement efficace pour le dosage et la mouture régulières de matières friables diverses, telles qu'on en rencontre par exemple dans l'industrie alimentaire, notamment des grains de féculent ou de céréales, des fragments de masse déshydratée, ou des flocons de purée déshydratée sur cylindre.The present apparatus, of simple and robust construction, has proved to be particularly effective for the regular dosing and grinding of various friable materials, such as are encountered for example in the food industry, in particular starchy grains or cereals. , fragments of dehydrated mass, or flakes of dehydrated mash on a cylinder.

Dans cet appareil, la vis doseuse peut être réalisée sous diverses formes telles qu'une vis d'archimède, une vis à corps cylindrique massif présentant une saillie hélicoïdale sur son pourtour, ou une vis creuse à spirale hélicoïdale libre, autrement dit une vis spirale, par exemple.In this device, the dosing screw can be produced in various forms such as an archimedean screw, a screw with a solid cylindrical body having a helical projection on its periphery, or a hollow screw with a free helical spiral, in other words a spiral screw , for example.

Au cas où la vis doseuse est réalisée sous forme d'une vis spirale, la spirale elle-même peut présenter des sections diverses, circulaires, carrées ou autres, selon la nature de la matière à doser.If the dosing screw is made in the form of a spiral screw, the spiral itself may have various sections, circular, square or other, depending on the nature of the material to be dosed.

De même, les barreaux du battoir peuvent présenter diverses sections, circulaires, carrées ou autres, selon la nature de la matière à moudre et la dimension des mailles du tamis, notamment.Similarly, the bars of the beater can have various sections, circular, square or other, depending on the nature of the material to be ground and the size of the mesh of the sieve, in particular.

Dans une forme d'exécution particulière, la vis doseuse est réalisée sous forme d'une vis spirale à section carrée et les barreaux du battoir présentent une section circulaire de diamètre inférieur ou égal au côté de la section carrée de la spirale.In a particular embodiment, the dosing screw is produced in the form of a spiral screw with a square section and the bars of the beater have a circular section of diameter less than or equal to the side of the square section of the spiral.

De préférence, les extrémités aval des barreaux se terminent dans un même plan perpendiculaire à l'axe de la vis doseuse et peuvent être fixés dans des encoches prévues sur le pourtour d'un flasque circulaire, par exemple.Preferably, the downstream ends of the bars end in the same plane perpendicular to the axis of the dosing screw and can be fixed in notches provided on the periphery of a circular flange, for example.

De préférence également, l'appareil est pourvu d'une trémie d'alimentation à l'extrémité amont de la vis doseuse et celle-ci est reliée à un moyen d'entraînement tel qu'un moteur électrique, par exemple.Also preferably, the device is provided with a feed hopper at the upstream end of the dosing screw and the latter is connected to a drive means such as an electric motor, for example.

L'appareil selon la présente invention est décrit ci-après en référence au dessin annexé, dans lequel:

  • la figure 1 est une vue schématique en coupe longitudinale partielle d'une forme d'exécution,
  • la figure 2 est une vue latérale de la vis doseuse et du battoir de la forme d'exécution selon la figure 1, et
  • la figure 3 est une vue de face prise d'aval du battoir de la forme d'exécution selon la figure 1.
The apparatus according to the present invention is described below with reference to the accompanying drawing, in which:
  • FIG. 1 is a schematic view in partial longitudinal section of an embodiment,
  • FIG. 2 is a side view of the dosing screw and of the beater of the embodiment according to FIG. 1, and
  • FIG. 3 is a front view taken downstream of the beater of the embodiment according to FIG. 1.

Dans la forme d'exécution représentée à la figure 1, l'appareil selon la présente invention comprend une vis doseuse 1, un battoir 2 formé de barreaux 3 solidaires du pourtour hélicoïdal de l'extrémité aval de la vis 1, un boîtier cylindrique 5 qui enveloppe la vis 1, et un tamis cylindrique 6 qui prolonge le boîtier cylindrique 5 et qui enveloppe le battoir 2.In the embodiment shown in Figure 1, the apparatus according to the present invention comprises a dosing screw 1, a beater 2 formed of bars 3 secured to the helical periphery of the downstream end of the screw 1, a cylindrical housing 5 which envelops the screw 1, and a cylindrical screen 6 which extends the cylindrical casing 5 and which envelops the beater 2.

L'appareil est pourvu d'une trémie d'alimentation 7 à l'extrémité amont de la vis doseuse 1. Cette dernière est reliée à un moteur électrique 8 par l'intermédiaire d'un axe rotatif 9 auquel elle est fixée.The device is provided with a feed hopper 7 at the upstream end of the dosing screw 1. The latter is connected to an electric motor 8 via a rotary axis 9 to which it is fixed.

Comme on peut le voir en particulier à la figure 2, la vis doseuse 1 est réalisée sous forme d'une vis spirale à section carrée. Les barreaux 3 du battoir 2 sont parallèles à l'axe 4 de la vis doseuse 1. Ils présentent une section circulaire de diamètre inférieur au côté de la section carrée de la spirale 1. Leurs extrémités amont 10 sont logées et soudées dans des logements cylindriques pratiqués dans la spirale même.As can be seen in particular in FIG. 2, the dosing screw 1 is produced in the form of a spiral screw with a square section. The bars 3 of the beater 2 are parallel to the axis 4 of the dosing screw 1. They have a circular section of smaller diameter than the side of the square section of the spiral 1. Their upstream ends 10 are housed and welded in cylindrical housings practiced in the very spiral.

Les extrémités aval 11 des barreaux 3 se terminent dans un même plan et sont fixées et soudées dans des logements ou encoches pratiquées dans le pourtour d'un flasque 12 circulaire, coaxial et perpendiculaire à l'axe 4 de la vis spirale 1.The downstream ends 11 of the bars 3 end in the same plane and are fixed and welded in housings or notches formed in the periphery of a circular flange 12, coaxial and perpendicular to the axis 4 of the spiral screw 1.

Comme on peut le voir en particulier à la figure 3, les barreaux 3 sont au nombre de six et ils sont répartis selon les sommets d'un hexagone.As can be seen in particular in Figure 3, the bars 3 are six in number and they are distributed according to the vertices of a hexagon.

Claims (3)

  1. A machine for feeding and grinding friable material comprising a beater (2), a metering screw (1) for feeding material to the beater (2) and a cylindrical housing (5) surrounding the screw (1), characterized in that the beater (2) is formed by bars (3) which are integral with the helical periphery of the downstream end of the screw (1), parallel to the axis (4) of the screw and distributed around the angles of a regular polygon centred on that axis and in that the machine comprises a cylindrical screen (6) extending the housing (5) and at least partly surrounding the beater (2).
  2. A machine as claimed in claim 1, characterized in that the metering screw (1) is a spiral screw.
  3. A machine as claimed in claim 1, characterized in that there are six bars (3).
EP90119198A 1989-10-26 1990-10-05 Apparatus for dosage and milling Expired - Lifetime EP0424712B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH3876/89 1989-10-26
CH3876/89A CH680835A5 (en) 1989-10-26 1989-10-26

Publications (2)

Publication Number Publication Date
EP0424712A1 EP0424712A1 (en) 1991-05-02
EP0424712B1 true EP0424712B1 (en) 1994-05-18

Family

ID=4265386

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Application Number Title Priority Date Filing Date
EP90119198A Expired - Lifetime EP0424712B1 (en) 1989-10-26 1990-10-05 Apparatus for dosage and milling

Country Status (16)

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US (1) US5071078A (en)
EP (1) EP0424712B1 (en)
JP (1) JPH03151057A (en)
KR (1) KR910007582A (en)
CN (1) CN1023447C (en)
AT (1) ATE105736T1 (en)
AU (1) AU623328B2 (en)
CA (1) CA2027676A1 (en)
CH (1) CH680835A5 (en)
DE (1) DE69008995T2 (en)
DK (1) DK0424712T3 (en)
ES (1) ES2055269T3 (en)
NO (1) NO176999C (en)
NZ (1) NZ235744A (en)
PT (1) PT95678A (en)
ZA (1) ZA908190B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012005167A1 (en) * 2012-03-16 2013-09-19 Mt-Energie Gmbh Apparatus and method for comminuting material to be fermented after comminution
US20130292502A1 (en) * 2012-05-02 2013-11-07 Guofeng Pan Paper shredder without wastebasket

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE89865C (en) * 1900-01-01
BE471509A (en) *
US1955914A (en) * 1928-06-04 1934-04-24 Krupp Fried Grusonwerk Ag Apparatus for producing cement and similar substances
US2717742A (en) * 1953-05-29 1955-09-13 Courtaulds Ltd Shredding machine with expansion chamber
GB1211759A (en) * 1968-06-05 1970-11-11 Financement Ind Commercial Et Improvements in or relating to crushing machines
US3834630A (en) * 1971-11-26 1974-09-10 Gunsons Sortex Ltd Recovery of packaged contents
US3771733A (en) * 1972-07-03 1973-11-13 Deere & Co Feed grinding apparatus
US3860182A (en) * 1973-11-05 1975-01-14 Cumberland Eng Co Auger feed granulator
JPS54119070A (en) * 1978-03-04 1979-09-14 Imamura Kk Grain milling apparatus
GB2054406B (en) * 1979-07-11 1983-02-02 Fisons Ltd Comminuting apparatus
SU1093319A1 (en) * 1982-08-02 1984-05-23 Центральный Научно-Исследовательский Институт Механизации И Электрификации Сельского Хозяйства Нечерноземной Зоны Ссср Installation for granulating fodder
US4752036A (en) * 1982-11-09 1988-06-21 Olin Research Center Granulator
GB2169818A (en) * 1985-01-19 1986-07-23 Birtley Eng Ltd Crushers

Also Published As

Publication number Publication date
JPH03151057A (en) 1991-06-27
ATE105736T1 (en) 1994-06-15
CN1051131A (en) 1991-05-08
DE69008995D1 (en) 1994-06-23
CN1023447C (en) 1994-01-12
KR910007582A (en) 1991-05-30
DE69008995T2 (en) 1994-09-08
NO176999B (en) 1995-03-27
EP0424712A1 (en) 1991-05-02
US5071078A (en) 1991-12-10
AU623328B2 (en) 1992-05-07
DK0424712T3 (en) 1994-09-05
NZ235744A (en) 1992-03-26
CA2027676A1 (en) 1991-04-27
ZA908190B (en) 1991-08-28
PT95678A (en) 1992-06-30
NO176999C (en) 1995-07-05
AU6398690A (en) 1991-05-02
ES2055269T3 (en) 1994-08-16
NO904600D0 (en) 1990-10-24
NO904600L (en) 1991-04-29
CH680835A5 (en) 1992-11-30

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