EP0638684B1 - Steam generator for iron - Google Patents

Steam generator for iron Download PDF

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Publication number
EP0638684B1
EP0638684B1 EP19940401811 EP94401811A EP0638684B1 EP 0638684 B1 EP0638684 B1 EP 0638684B1 EP 19940401811 EP19940401811 EP 19940401811 EP 94401811 A EP94401811 A EP 94401811A EP 0638684 B1 EP0638684 B1 EP 0638684B1
Authority
EP
European Patent Office
Prior art keywords
boiler
low point
steam generator
base
generator according
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
EP19940401811
Other languages
German (de)
French (fr)
Other versions
EP0638684A1 (en
Inventor
Gino Barazza
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.)
ESSE85
SEB SA
Original Assignee
Moulinex SA
ESSE85 Srl
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
Publication date
Application filed by Moulinex SA, ESSE85 Srl filed Critical Moulinex SA
Publication of EP0638684A1 publication Critical patent/EP0638684A1/en
Application granted granted Critical
Publication of EP0638684B1 publication Critical patent/EP0638684B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B1/00—Methods of steam generation characterised by form of heating method
    • F22B1/28—Methods of steam generation characterised by form of heating method in boilers heated electrically
    • F22B1/284—Methods of steam generation characterised by form of heating method in boilers heated electrically with water in reservoirs
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F75/00—Hand irons
    • D06F75/08—Hand irons internally heated by electricity
    • D06F75/10—Hand irons internally heated by electricity with means for supplying steam to the article being ironed
    • D06F75/12—Hand irons internally heated by electricity with means for supplying steam to the article being ironed the steam being produced from water supplied to the iron from an external source

Definitions

  • the invention relates to steam generators for an iron comprising a housing containing a boiler with bottom, side wall and cover, said bottom being equipped with an electrical resistance heater determining a heating zone intense, and said cover having a filling orifice communicating by means of a nozzle with a opening made in the housing.
  • a generator is known of document FR-A-2,512,473.
  • the object of the present invention is to remove these disadvantages.
  • the bottom of the boiler has a region forming a low point arranged in part outside the intense heating zone, and the filling is carried out above said low point.
  • the area forming low point, less heated than the heating zone intense electrical resistance retains a small amount of residual water on the bottom, and the filling water falls directly on this residual water preventing vaporization and then gradually spreading from this hot zone to the intense heating zone without causing violent boiling.
  • the bottom of the boiler is arranged in an inclined plane with respect to to a horizontal plane so as to constitute in the part the lowest of said boiler the lowest point, and the filling orifice is arranged at a point on the peripheral region of the cover above the point low.
  • This inclined bottom provides a low point of simple and economical way since it avoids operations mechanical on the bottom of the boiler such than stamping or welding an insert for obtain a depression forming said low point.
  • the steam generator 1 is intended to be supplied by a flexible tube 2 a steam iron shown schematically in 3.
  • This generator comprises a box 4 containing a metal boiler 5 having a bottom 6, a wall side 7 and a cover 8, said bottom 6 being equipped an electric heating resistor 9 determining a intense heating zone, and said cover having a filling orifice 10 communicating by means of a nozzle 11 with an opening 12 made in the housing 4.
  • This nozzle is mounted in a sealed manner on the orifice 10 and is closed by a plug (not shown) when the boiler is filled with water and ready to generate steam for iron 3.
  • the electrical resistance heater is armored tubular type and is either welded or crimped to the bottom of the boiler so as to obtain an excellent heat exchange to create a heating zone intense practically in line with resistance.
  • the electrical resistance heater is embedded in a foundry plate 13 so as to obtain a large zone of intense and uniform heating practically to the right of this plate.
  • the bottom 6 of the boiler has a region 14 forming a low point arranged in part outside the intense heating zone, and the filling 10 is performed above said low point.
  • This low point can, for example, be achieved by a depression (not illustrated) made by stamping or obtained by welding a bucket in the bottom 6 of the boiler, at a distance either from the resistance path armored tubular either from the periphery of the plate heating 13.
  • the bottom 6 of the boiler 5 extends in one plane and is mounted inclined in the housing 4 relative to a plane horizontal such as for example the horizontal plane P on which rests the housing 4 in the working position, so as to constitute in the lowest part of the low point boiler 14.
  • this low point 14 is located outside the intense heating zone constituted by the heating plate 13, that is to say between the side wall 7 and the periphery of the plate 13.
  • the filling orifice 10 is arranged at a point in the peripheral region of the cover 8 located above the low point 14.
  • this low point 14 constitutes a reserve of water not boiling water in which the filling water introduced through the nozzle 11 flows directly and contributes to cool this water reserve.
  • the water level gradually rises over the inclined surface of the bottom 6 while gradually heating up at the level of the intense heating zone without create violent bubbling or splashing water important.
  • the invention provides that the nozzle 11 comprises a lower section 15 extending in the boiler 5 beyond orifice 10 towards point bottom 14.
  • the length of this section 15 is preferably close to a third of the depth of the boiler 5 measured between low point 14 and the filling orifice 10.
  • this section 15 constitutes, not only, a regular flow guide for filling water to the low point 14, but also a guard against projections any disorderly water, while sparing a steam reserve at the top of the boiler.
  • the boiler 5 is formed by two asymmetrical bowls upper 16 and lower 17 facing one the other and assembled by their peripheral edges 18 and 19, the lower bowl 17 being mounted in the housing 4 on shoulders 20 and 21 of different heights of so as to place the bottom in an inclined plane.
  • This tilting device of the lower bowl 17 is of a particularly simple and economical realization.

Description

L'invention se rapporte aux générateurs de vapeur pour fer à repasser comportant un boítier renfermant une chaudière présentant un fond, une paroi latérale et un couvercle, ledit fond étant équipé d'une résistance électrique chauffante déterminant une zone de chauffage intense, et ledit couvercle présentant un orifice de remplissage communiquant au moyen d'un ajutage avec une ouverture pratiquée dans le boítier. Un tel générateur est connu du document FR-A-2 512 473.The invention relates to steam generators for an iron comprising a housing containing a boiler with bottom, side wall and cover, said bottom being equipped with an electrical resistance heater determining a heating zone intense, and said cover having a filling orifice communicating by means of a nozzle with a opening made in the housing. Such a generator is known of document FR-A-2,512,473.

Dans de tels générateurs, on constate bien souvent, au début de l'opération de remplissage en eau de la chaudière lorsqu'elle est vide et toujours chaude, une émission importante de vapeur et des projections d'eau chaude hors de l'ajutage, susceptibles d'occasionner des brûlures à l'usager. Cette émission de vapeur et ces projections d'eau chaude s'expliquent par le fait que, généralement les chaudières n'ayant pas une grande profondeur pour des raisons d'encombrement et d'esthétique, l'eau de remplissage dans une première phase se vaporise instantanément, puis dans une seconde phase se répand sur le fond chaud ou surchauffé et se met à bouillir violemment entraínant des gouttes d'eau chaude hors de l'ajutage.In such generators, we often see, at the start of the water filling operation of the boiler when empty and still hot, a significant emission of steam and water splashes hot outside the nozzle, likely to cause burns to the user. This vapor emission and these projections are explained by the fact that, generally boilers not having a great depth for reasons of space and aesthetics, the filling water in a first phase vaporizes instantly and then in a second phase spreads over hot or overheated bottom and boils violently causing hot water drops out of the nozzle.

Le but de la présente invention est de supprimer ces inconvénients. The object of the present invention is to remove these disadvantages.

Selon l'invention, le fond de la chaudière présente une région formant un point bas agencée en partie hors de la zone de chauffage intense, et l'orifice de remplissage est pratiqué au-dessus dudit point bas.According to the invention, the bottom of the boiler has a region forming a low point arranged in part outside the intense heating zone, and the filling is carried out above said low point.

Ainsi, grâce à cette combinaison, la zone formant point bas, moins chauffée que la zone de chauffage intense de la résistance électrique, retient une petite quantité d'eau résiduelle sur le fond, et l'eau de remplissage tombe directement sur cette eau résiduelle empêchant la vaporisation, puis se répand progressivement de cette zone chaude vers la zone de chauffage intense sans provoquer d'ébullition violente.So, thanks to this combination, the area forming low point, less heated than the heating zone intense electrical resistance, retains a small amount of residual water on the bottom, and the filling water falls directly on this residual water preventing vaporization and then gradually spreading from this hot zone to the intense heating zone without causing violent boiling.

Selon un mode de réalisation préféré, le fond de la chaudière est agencé dans un plan incliné par rapport à un plan horizontal de manière à constituer dans la partie la plus basse de ladite chaudière le point bas, et l'orifice de remplissage est agencé en un point de la région périphérique du couvercle situé au-dessus du point bas.According to a preferred embodiment, the bottom of the boiler is arranged in an inclined plane with respect to to a horizontal plane so as to constitute in the part the lowest of said boiler the lowest point, and the filling orifice is arranged at a point on the peripheral region of the cover above the point low.

Ce fond incliné permet d'obtenir un point bas de manière simple et économique puisqu'il évite des opérations mécaniques sur le fond de la chaudière telles qu'emboutissage ou soudure d'une pièce rapportée pour obtenir une dépression formant ledit point bas.This inclined bottom provides a low point of simple and economical way since it avoids operations mechanical on the bottom of the boiler such than stamping or welding an insert for obtain a depression forming said low point.

Les caractéristique et avantages de l'invention ressortiront d'ailleurs de la description qui va suivre, à titre d'exemple, en référence au dessin annexé représentant en coupe verticale et schématique un générateur de vapeur selon l'invention.The characteristics and advantages of the invention will emerge from the description which follows, by way of example, with reference to the accompanying drawing representing in vertical and schematic section a generator of steam according to the invention.

Comme représenté à la figure unique du dessin, le générateur de vapeur 1 est destiné à alimenter par un tube flexible 2 un fer à repasser à vapeur schématisé en 3. Ce générateur comprend un boítier 4 renfermant une chaudière métallique 5 présentant un fond 6, une paroi latérale 7 et un couvercle 8, ledit fond 6 étant équipé d'une résistance électrique chauffante 9 déterminant une zone de chauffage intense, et ledit couvercle présentant un orifice de remplissage 10 communiquant au moyen d'un ajutage 11 avec une ouverture 12 pratiquée dans le boítier 4. Cet ajutage est monté de façon étanche sur l'orifice 10 et est fermé par un bouchon (non représenté) lorsque la chaudière est remplie d'eau et prête à générer la vapeur pour le fer 3.As shown in the single figure of the drawing, the steam generator 1 is intended to be supplied by a flexible tube 2 a steam iron shown schematically in 3. This generator comprises a box 4 containing a metal boiler 5 having a bottom 6, a wall side 7 and a cover 8, said bottom 6 being equipped an electric heating resistor 9 determining a intense heating zone, and said cover having a filling orifice 10 communicating by means of a nozzle 11 with an opening 12 made in the housing 4. This nozzle is mounted in a sealed manner on the orifice 10 and is closed by a plug (not shown) when the boiler is filled with water and ready to generate steam for iron 3.

Selon un premier mode de réalisation non représenté, la résistance électrique chauffante est du type tubulaire blindée et est soit soudée soit sertie sur le fond de la chaudière de manière à obtenir un excellent échange thermique pour créer une zone de chauffage intense pratiquement au droit de la résistance.According to a first embodiment not shown, the electrical resistance heater is armored tubular type and is either welded or crimped to the bottom of the boiler so as to obtain an excellent heat exchange to create a heating zone intense practically in line with resistance.

Selon un second mode préféré de réalisation et comme illustré, la résistance électrique chauffante est noyée dans une plaque de fonderie 13 de manière à obtenir une large zone de chauffage intense et uniforme pratiquement au droit de cette plaque.According to a second preferred embodiment and as illustrated, the electrical resistance heater is embedded in a foundry plate 13 so as to obtain a large zone of intense and uniform heating practically to the right of this plate.

Selon l'invention, le fond 6 de la chaudière présente une région 14 formant point bas agencé en partie hors de la zone de chauffage intense, et l'orifice de remplissage 10 est pratiqué au-dessus dudit point bas.According to the invention, the bottom 6 of the boiler has a region 14 forming a low point arranged in part outside the intense heating zone, and the filling 10 is performed above said low point.

Ce point bas peut, par exemple, être réalisé par une dépression (non illustrée) pratiquée par emboutissage ou obtenue par soudure d'un godet dans le fond 6 de la chaudière, à distance soit du chemin de la résistance blindée tubulaire soit de la périphérie de la plaque chauffante 13. De préférence et comme illustré, le fond 6 de la chaudière 5 s'étend dans un plan et est monté incliné dans le boítier 4 par rapport à un plan horizontal tel que par exemple le plan horizontal P sur lequel repose le boítier 4 en position de travail, de manière à constituer dans la partie la plus basse de la chaudière le point bas 14. Comme représenté, ce point bas 14 est situé hors de la zone de chauffage intense constitué par la plaque chauffante 13, c'est-à-dire entre la paroi latérale 7 et la périphérie de la plaque 13.This low point can, for example, be achieved by a depression (not illustrated) made by stamping or obtained by welding a bucket in the bottom 6 of the boiler, at a distance either from the resistance path armored tubular either from the periphery of the plate heating 13. Preferably and as illustrated, the bottom 6 of the boiler 5 extends in one plane and is mounted inclined in the housing 4 relative to a plane horizontal such as for example the horizontal plane P on which rests the housing 4 in the working position, so as to constitute in the lowest part of the low point boiler 14. As shown, this low point 14 is located outside the intense heating zone constituted by the heating plate 13, that is to say between the side wall 7 and the periphery of the plate 13.

Dans cette réalisation, l'orifice de remplissage 10 est agencé en un point de la région périphérique du couvercle 8 situé au-dessus du point bas 14.In this embodiment, the filling orifice 10 is arranged at a point in the peripheral region of the cover 8 located above the low point 14.

En se référant au dessin, on comprend que grâce à cette disposition du point bas 14 par rapport à la plaque 13, ce point bas 14 constitue une réserve d'eau non bouillante dans laquelle l'eau de remplissage introduite par l'ajutage 11 vient s'écouler directement et contribue à refroidir cette réserve d'eau. Au fur et à mesure du remplissage, le niveau de l'eau monte graduellement sur la surface inclinée du fond 6 en se réchauffant graduellement au niveau de la zone de chauffage intense sans créer de bouillonnement violent ni de projections d'eau importantes.Referring to the drawing, we understand that thanks to this arrangement of the low point 14 relative to the plate 13, this low point 14 constitutes a reserve of water not boiling water in which the filling water introduced through the nozzle 11 flows directly and contributes to cool this water reserve. As the filling, the water level gradually rises over the inclined surface of the bottom 6 while gradually heating up at the level of the intense heating zone without create violent bubbling or splashing water important.

En outre, de manière à éliminer tout risque de projections, l'invention prévoit que l'ajutage 11 comporte un tronçon inférieur 15 s'étendant dans la chaudière 5 au-delà de l'orifice 10 en direction du point bas 14. La longueur de ce tronçon 15 est de préférence voisine du tiers de la profondeur de la chaudière 5 mesurée entre le point bas 14 et l'orifice de remplissage 10.In addition, in order to eliminate any risk of projections, the invention provides that the nozzle 11 comprises a lower section 15 extending in the boiler 5 beyond orifice 10 towards point bottom 14. The length of this section 15 is preferably close to a third of the depth of the boiler 5 measured between low point 14 and the filling orifice 10.

Ainsi, ce tronçon 15 constitue, non seulement, un guide d'écoulement régulier de l'eau de remplissage vers le point bas 14, mais aussi une garde contre les projections d'eau éventuelles désordonnées, tout en ménageant dans le haut de la chaudière une réserve de vapeur.Thus, this section 15 constitutes, not only, a regular flow guide for filling water to the low point 14, but also a guard against projections any disorderly water, while sparing a steam reserve at the top of the boiler.

Selon un mode préféré de réalisation, la chaudière 5 est formée de deux cuvettes dissymétriques supérieure 16 et inférieure 17 tournées l'une vers l'autre et assemblées par leurs bords périphériques 18 et 19, la cuvette inférieure 17 étant montée dans le boítier 4 sur des épaulements 20 et 21 de hauteurs différentes de manière à placer le fond dans un plan incliné. Ce dispositif d'inclinaison de la cuvette inférieure 17 est d'une réalisation particulièrement simple et économique.According to a preferred embodiment, the boiler 5 is formed by two asymmetrical bowls upper 16 and lower 17 facing one the other and assembled by their peripheral edges 18 and 19, the lower bowl 17 being mounted in the housing 4 on shoulders 20 and 21 of different heights of so as to place the bottom in an inclined plane. This tilting device of the lower bowl 17 is of a particularly simple and economical realization.

Claims (5)

  1. Steam generator for an iron having a casing (4) enclosing a boiler (5) having a base (6), a side wall (7) and a cover (8), the said base being equipped with an electrical heating element (9-13) determining an intense heating area, and the said cover having a filling orifice (10) communicating by means of a nozzle (11) with an opening (12) formed in the casing, characterised in that the base (6) of the boiler has a region (14) forming a low point arranged partly outside the intense heating area, and the filling orifice (10) is formed above the said low point.
  2. Steam generator according to Claim 1, characterised in that the base (6) of the boiler is arranged in a plane which is inclined with respect to a horizontal plane so as to constitute the low point (14) in the lowest part of the said boiler, and the filling orifice (10) is arranged at a point in the peripheral region of the cover (8) situated above the low point (14).
  3. Steam generator according to Claim 2, characterised in that the boiler is formed by two asymmetrical bowls, upper (16) and lower (17), turned towards each other and connected by their peripheral edges (18, 19), the lower bowl (17) being mounted in the casing so as to place the base in an inclined plane.
  4. Steam generator according to Claim 2 or 3, characterised in that the electrical heating element (9) consists of a cast plate (13) extending partly over the entire base (6) so as to form, in the lowest region of the boiler, the low point (14) between the side wall (7) of the said boiler and the periphery of the said plate (13).
  5. Steam generator according to any one of the preceding claims, characterised in that the nozzle (11) has a lower section (15) extending into the boiler beyond the orifice (10) in the direction of the low point (14).
EP19940401811 1993-08-06 1994-08-05 Steam generator for iron Expired - Lifetime EP0638684B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9309754A FR2708636B1 (en) 1993-08-06 1993-08-06 Steam generator for iron.
FR9309754 1993-08-06

Publications (2)

Publication Number Publication Date
EP0638684A1 EP0638684A1 (en) 1995-02-15
EP0638684B1 true EP0638684B1 (en) 1998-12-30

Family

ID=9450034

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19940401811 Expired - Lifetime EP0638684B1 (en) 1993-08-06 1994-08-05 Steam generator for iron

Country Status (4)

Country Link
EP (1) EP0638684B1 (en)
DE (1) DE69415608T2 (en)
ES (1) ES2128522T3 (en)
FR (1) FR2708636B1 (en)

Cited By (1)

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US7905119B2 (en) 2007-08-31 2011-03-15 Whirlpool Corporation Fabric treatment appliance with steam generator having a variable thermal output

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Publication number Priority date Publication date Assignee Title
IT1288957B1 (en) * 1996-07-26 1998-09-25 Esse 85 Srl STEAM GENERATOR FOR IRON OR SIMILAR
IT1311200B1 (en) * 1999-02-01 2002-03-04 Euro Star Srl STEAM GENERATOR FOR CLEANING MACHINES, IRON, MACHINES FOR COFFEE AND SIMILAR.
ITPN20000063A1 (en) * 2000-10-16 2002-04-16 Euro Star Srl STEAM GENERATOR WITH PERFECTED INJECTOR
CN100414033C (en) * 2006-02-09 2008-08-27 徐建群 Steam storage type evaporating pot
US7941885B2 (en) 2006-06-09 2011-05-17 Whirlpool Corporation Steam washing machine operation method having dry spin pre-wash
US7765628B2 (en) 2006-06-09 2010-08-03 Whirlpool Corporation Steam washing machine operation method having a dual speed spin pre-wash
US7730568B2 (en) 2006-06-09 2010-06-08 Whirlpool Corporation Removal of scale and sludge in a steam generator of a fabric treatment appliance
US7841219B2 (en) 2006-08-15 2010-11-30 Whirlpool Corporation Fabric treating appliance utilizing steam
US7665332B2 (en) 2006-08-15 2010-02-23 Whirlpool Corporation Steam fabric treatment appliance with exhaust
US7707859B2 (en) 2006-08-15 2010-05-04 Whirlpool Corporation Water supply control for a steam generator of a fabric treatment appliance
US7681418B2 (en) 2006-08-15 2010-03-23 Whirlpool Corporation Water supply control for a steam generator of a fabric treatment appliance using a temperature sensor
US7886392B2 (en) 2006-08-15 2011-02-15 Whirlpool Corporation Method of sanitizing a fabric load with steam in a fabric treatment appliance
US7753009B2 (en) 2006-10-19 2010-07-13 Whirlpool Corporation Washer with bio prevention cycle
US8393183B2 (en) 2007-05-07 2013-03-12 Whirlpool Corporation Fabric treatment appliance control panel and associated steam operations
US8555676B2 (en) 2007-08-31 2013-10-15 Whirlpool Corporation Fabric treatment appliance with steam backflow device
US8037565B2 (en) 2007-08-31 2011-10-18 Whirlpool Corporation Method for detecting abnormality in a fabric treatment appliance having a steam generator
US7690062B2 (en) 2007-08-31 2010-04-06 Whirlpool Corporation Method for cleaning a steam generator
US8555675B2 (en) 2007-08-31 2013-10-15 Whirlpool Corporation Fabric treatment appliance with steam backflow device
US7966683B2 (en) 2007-08-31 2011-06-28 Whirlpool Corporation Method for operating a steam generator in a fabric treatment appliance
US7918109B2 (en) 2007-08-31 2011-04-05 Whirlpool Corporation Fabric Treatment appliance with steam generator having a variable thermal output
US7861343B2 (en) 2007-08-31 2011-01-04 Whirlpool Corporation Method for operating a steam generator in a fabric treatment appliance
WO2011127620A1 (en) * 2010-04-12 2011-10-20 Sun Cupid Industries Ltd. Boiler
CN109235001A (en) * 2018-11-27 2019-01-18 伟创亚洲有限公司 A kind of boiler components and the steam ironing appliance using the boiler components

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2512473A1 (en) * 1981-09-09 1983-03-11 Maksa Christian Pressure steam ironing device - of steam iron and steam generator, connected by tubing
IT222072Z2 (en) * 1991-12-05 1994-12-30 Zani Gianmauro DEVICE FOR LOADING WATER OR OTHER SIMILAR LIQUID IN A PRESSURE CHAMBER FOR EXAMPLE IN A BOILER OF COFFEE MACHINE FOR FLOOR CLEANING IRON OR SIMILAR APPLIANCES

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7905119B2 (en) 2007-08-31 2011-03-15 Whirlpool Corporation Fabric treatment appliance with steam generator having a variable thermal output

Also Published As

Publication number Publication date
DE69415608T2 (en) 1999-06-24
DE69415608D1 (en) 1999-02-11
ES2128522T3 (en) 1999-05-16
FR2708636B1 (en) 1996-02-02
EP0638684A1 (en) 1995-02-15
FR2708636A1 (en) 1995-02-10

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