EP0189762A2 - Blade assembly for an electrically operated hand knife - Google Patents

Blade assembly for an electrically operated hand knife Download PDF

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Publication number
EP0189762A2
EP0189762A2 EP86100205A EP86100205A EP0189762A2 EP 0189762 A2 EP0189762 A2 EP 0189762A2 EP 86100205 A EP86100205 A EP 86100205A EP 86100205 A EP86100205 A EP 86100205A EP 0189762 A2 EP0189762 A2 EP 0189762A2
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EP
European Patent Office
Prior art keywords
notch
blade
blades
chamfer
internal face
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.)
Granted
Application number
EP86100205A
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German (de)
French (fr)
Other versions
EP0189762A3 (en
EP0189762B1 (en
Inventor
Marc Pierre Brison
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.)
Moulinex SA
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Moulinex SA
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Publication date
Application filed by Moulinex SA filed Critical Moulinex SA
Priority to AT86100205T priority Critical patent/ATE51561T1/en
Publication of EP0189762A2 publication Critical patent/EP0189762A2/en
Publication of EP0189762A3 publication Critical patent/EP0189762A3/en
Application granted granted Critical
Publication of EP0189762B1 publication Critical patent/EP0189762B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B7/00—Hand knives with reciprocating motor-driven blades
    • B26B7/005—Counter reciprocating blades
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B9/00—Blades for hand knives
    • B26B9/02—Blades for hand knives characterised by the shape of the cutting edge, e.g. wavy

Definitions

  • the invention relates to a set of blades intended to equip an electric knife, and more particularly to a set of blades suitable for slicing food such as bread.
  • each blade having in its lower edge a series of notches leaving between they projecting teeth, the hollow of each notch having a chamfer extending from the inner face to the outer face of the blade and thus forming a cutting edge located on said inner face.
  • blades of this kind are well suited for slicing tender foods, such as meat for example, but are not well suited for slicing bread which has a relatively hard and rough crust on a body composed of fairly soft crumbs.
  • the invention aims to provide a solution to this problem.
  • each tooth has a small notch in the shape of an arc of a circle with a concavity of a turn. born downward which extends between the chamfered edges of said tooth and which itself has a chamfer extending from the internal face to the external face of the blade, the ends of this notch thus constituting with said edges of the tooth two points close to each other.
  • Such a set of blades is well suited to slicing bread: in fact, it combines the usual effect of slicing and shearing of the crumb with an effect of planing the crust of the bread thanks to the addition of the pair of points in the end of each tooth.
  • the set of blades shown is intended to equip an electric knife comprising a motor alternately driving in opposite direction two parallel sliding drawers which each receive one of the blades.
  • This set of blades comprises two adjacent blades 10 and 12 arranged in parallel vertical planes and joined to one another according to their internal face 14. Each of these blades 10 and 12 has in its lower edge 16 a series of notches 18 leaving teeth between them protruding 20.
  • each notch 18 has a chamfer 21 extending from the internal face 14 to the external face 22 of the blade and thus forming a cutting edge 24 located on the internal face 14.
  • each tooth 20 has a small notch 26 in the form of an arc of a circle with a concavity facing downwards which extends between the chamfered edges 27 of this tooth and which itself has a chamfer 28 extending from the internal face 14 to the external face 22 of the blade, the ends of this notch 26 thus constituting, with the edges 27 of the tooth 20, two points 30 and 32 brought together.
  • each notch 18 has the general shape of an isosceles trapezoid and the angle a between each side of the trapezium and the line of alignment of the lower points 30, 32 of the blade is of the 'order of fifty degrees.
  • the width of a small notch 26 from one point 30 to the other 32 is of the order of one fifth of the width of a notch 18.
  • this width of the notch 26 is of the order of 'one millimeter, the width of the notch 18 then being five millimeters.
  • the depth P of each notch 18 is, for example, between two and three millimeters.
  • each blade 10, 12 goes. decreasing towards the lower ends of the teeth 20 and the angle b between the internal face 14 of the blade and the chamfer 28 of the small notch 26 is greater than the angle c between this internal face 14 and the chamfer 21 of the bottom of the indentations 18.
  • the angle b is of the order of sixty degrees
  • the angle c is of the order of thirty degrees.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Knives (AREA)
  • Food-Manufacturing Devices (AREA)
  • Harvester Elements (AREA)
  • Surgical Instruments (AREA)
  • Supercharger (AREA)
  • Eye Examination Apparatus (AREA)
  • Manufacturing And Processing Devices For Dough (AREA)
  • Scissors And Nippers (AREA)

Abstract

Ce jeu de lames comprend deux lames adjacentes accolées l'une à l'autre selon leur face interne, chaque lame (12) présentant dans son bord inférieur une série d'échancrures (18) laissant entre elles des dents saillantes (20) à bords chanfreinés (27).This set of blades comprises two adjacent blades joined to one another along their internal face, each blade (12) having in its lower edge a series of notches (18) leaving between them projecting teeth (20) with edges chamfered (27).

Selon l'invention, le sommet de chaque dent (20) présente une petite encoche (26) en forme d'arc de cercle à concavité tournée vers le bas qui s'étend entre les bords chanfreinés (27) et qui présente elle-même un chanfrein (28); les extrémités de cette encoche constituent ainsi deux pointes (30 et 32) rapprochées l'une de l'autre.According to the invention, the top of each tooth (20) has a small notch (26) in the form of an arc of a circle with a concavity facing downwards which extends between the chamfered edges (27) and which itself has a chamfer (28); the ends of this notch thus constitute two points (30 and 32) close to one another.

L'invention s'applique aux lames destinées au tranchage de pain.

Figure imgaf001
The invention applies to blades intended for slicing bread.
Figure imgaf001

Description

L'invention se rapporte à un jeu de lames destiné à équiper un couteau électrique, et plus particulièrement à un jeu de lames adapté au tranchage d'aliments tels que le pain.The invention relates to a set of blades intended to equip an electric knife, and more particularly to a set of blades suitable for slicing food such as bread.

Elle concerne, plus précisément, un jeu de lames du type comprenant deux lames adjacentes disposées dans des plans verticaux parallèles et accolées l'une à l'autre selon leur face interne, chaque lame présentant dans son bord inférieur une série d'échancrures laissant entre elles des dents saillantes, le creux de chaque échancrure présentant un chanfrein s'étendant de la face interne à la face externe de la lame et formant ainsi une arête tranchante située sur ladite face interne.More specifically, it relates to a set of blades of the type comprising two adjacent blades arranged in parallel vertical planes and joined to one another according to their internal face, each blade having in its lower edge a series of notches leaving between they projecting teeth, the hollow of each notch having a chamfer extending from the inner face to the outer face of the blade and thus forming a cutting edge located on said inner face.

Les lames usuelles de ce genre sont bien adaptées au tranchage des aliments ten dres, tels que la viande par exemple, mais ne conviennent pas bien au tranchage du pain qui présente une croûte relativement dure et rugueuse sur un corps composé de mie assez tendre.The usual blades of this kind are well suited for slicing tender foods, such as meat for example, but are not well suited for slicing bread which has a relatively hard and rough crust on a body composed of fairly soft crumbs.

L'invention a pour but d'apporter une solution à ce problème.The invention aims to provide a solution to this problem.

Selon l'invention, le sommet de chaque dent présente une petite encoche en forme d'arc de cercle à concavité tournée vers le bas qui s'étend entre les bords chanfreinés de ladite dent et qui présente elle-même un chanfrein s' étendant de la face interne à la face externe de la lame, les extrémités de cette encoche constituant ainsi avec lesdits bords de la dent deux pointes rapprochées l'une de l'autre.According to the invention, the top of each tooth has a small notch in the shape of an arc of a circle with a concavity of a turn. born downward which extends between the chamfered edges of said tooth and which itself has a chamfer extending from the internal face to the external face of the blade, the ends of this notch thus constituting with said edges of the tooth two points close to each other.

Un tel jeu de lames est bien adapté au tranchage du pain : en effet, il combine l'effet usuel de tranchage et cisaillement de la mie avec un effet de rabotage de la croûte du pain grâce à l'adjonction de la paire de pointes en l'extrémité de chaque dent.Such a set of blades is well suited to slicing bread: in fact, it combines the usual effect of slicing and shearing of the crumb with an effect of planing the crust of the bread thanks to the addition of the pair of points in the end of each tooth.

Les caractéristiques et avantages de l'invention ressortiront d'ailleurs de la description qui va suivre, à titre d'exemple, en référence au dessin annexé dans lequel :

  • la figure 1 représente en élévation un jeu de lames selon l'invention ; la figure 2 est une vue de dessus de ce jeu de lames ; la figure 3 est une vue en élévation et à plus grande échelle d'une partie de la denture d'une lame vue selon la flèche F de la figure 2 ; la figure 4 est une coupe verticale de la denture d'une lame selon la ligne IV-IV de la figure 3 ; la figure 5 est une coupe analogue selon la ligne V-V de la figure 3.
The characteristics and advantages of the invention will become apparent from the description which follows, by way of example, with reference to the appended drawing in which:
  • Figure 1 shows in elevation a set of blades according to the invention; Figure 2 is a top view of this set of blades; Figure 3 is an elevational view on a larger scale of a portion of the teeth of a blade seen according to arrow F of Figure 2; Figure 4 is a vertical section of the teeth of a blade along the line IV-IV of Figure 3; FIG. 5 is a similar section along the line VV in FIG. 3.

Le jeu de lames représenté est destiné à équiper un couteau électrique comportant un moteur entraînant alternativement en sens inverse deux tiroirs coulissants parallèles qui reçoivent chacun l'une des lames.The set of blades shown is intended to equip an electric knife comprising a motor alternately driving in opposite direction two parallel sliding drawers which each receive one of the blades.

Ce jeu de lames comprend deux lames 10 et 12 adjacentes disposées dans des plans verticaux parallèles et accolées l'une à l'autre selon leur face interne 14. Chacune de ces lames 10 et 12 présente dans son bord inférieur 16 une série d'échancrures 18 laissant entre elles des dents saillantes 20.This set of blades comprises two adjacent blades 10 and 12 arranged in parallel vertical planes and joined to one another according to their internal face 14. Each of these blades 10 and 12 has in its lower edge 16 a series of notches 18 leaving teeth between them protruding 20.

Le creux de chaque échancrure 18 présente un chanfrein 21 s'étendant de la face interne 14 à la face externe 22 de la lame et formant ainsi une arête tranchante 24 située sur la face interne 14.The hollow of each notch 18 has a chamfer 21 extending from the internal face 14 to the external face 22 of the blade and thus forming a cutting edge 24 located on the internal face 14.

Le sommet de chaque dent 20 présente une petite encoche 26 en forme d'arc de cercle à concavité tournée vers le bas qui s'étend entre les bords chanfreinés 27 de cette dent et qui présente elle-même un chanfrein 28 s'étendant de la face interne 14 à la face externe 22 de la lame, les extrémités de cette encoche 26 constituant ainsi avec les bords 27 de la dent 20 deux pointes 30 et 32 rapprochées l'une de l'autre.The top of each tooth 20 has a small notch 26 in the form of an arc of a circle with a concavity facing downwards which extends between the chamfered edges 27 of this tooth and which itself has a chamfer 28 extending from the internal face 14 to the external face 22 of the blade, the ends of this notch 26 thus constituting, with the edges 27 of the tooth 20, two points 30 and 32 brought together.

Comme on le volt bien sur la figure 3, chaque échancrure 18 a la forme générale d'un trapèze isocèle et l'angle a entre chaque c8té du trapèze et la ligne d'alignement des pointes inférieures 30, 32 de la lame est de l'ordre de cinquante degrés. La largeur d'une petite encoche 26 d'une pointe 30 à l'autre 32 est de l'ordre du cinquième de la largeur d'une échancrure 18. Par exemple, cette largeur de l'encoche 26 est de l'ordre d'un millimètre, la largeur de l'échancrure 18 étant alors de cinq millimètres. La profondeur P de chaque échancrure 18 est comprise, par exemple, entre deux et trois millimètres.As shown in FIG. 3, each notch 18 has the general shape of an isosceles trapezoid and the angle a between each side of the trapezium and the line of alignment of the lower points 30, 32 of the blade is of the 'order of fifty degrees. The width of a small notch 26 from one point 30 to the other 32 is of the order of one fifth of the width of a notch 18. For example, this width of the notch 26 is of the order of 'one millimeter, the width of the notch 18 then being five millimeters. The depth P of each notch 18 is, for example, between two and three millimeters.

Comme représenté aux figures 4 et 5, l'épaisseur de chaque lame 10, 12 va. en décroissant vers les extrémités inférieures des dents 20 et l'angle b entre la face interne 14 de la lame et le chanfrein 28 de la petite encoche 26 est supérieur à l'angle c entre cette face interne 14 et le chanfrein 21 du fond des échancrures 18. Par exemple, l'angle b est de l'ordre de soixante degrès, et l' angle cde l'ordre de trente degrés.As shown in Figures 4 and 5, the thickness of each blade 10, 12 goes. decreasing towards the lower ends of the teeth 20 and the angle b between the internal face 14 of the blade and the chamfer 28 of the small notch 26 is greater than the angle c between this internal face 14 and the chamfer 21 of the bottom of the indentations 18. For example, the angle b is of the order of sixty degrees, and the angle c is of the order of thirty degrees.

Comme on le comprendra, lorsque les lames 10 et 12 sont entraînées alternativement en sens inverse par le moteur du couteau électrique, il se produit un effet de tranchage des échancrures chanfreinées 18, combiné avec un effet de rabotage des pointes 30 et 32 de la petite encoche 26.As will be understood, when the blades 10 and 12 are driven alternately in opposite directions by the motor of the electric knife, there is a cutting effect of the chamfered notches 18, combined with a planing effect of the points 30 and 32 of the small notch 26.

Claims (10)

1. Jeu de lames destiné à équiper un couteau électrique pour trancher des aliments tels que le pain, comprenant deux lames adjacentes (10, 12) disposées dans des plans verticaux parallèles et accolées l'une à l'autre selon leur face interne (14), chaque lame (10, 12) présentant dans son bord inférieur (16) une série d'échancrures (18) laissant entre elles des dents saillantes (20), la creux de chaque échancrure (18) présentant un chanfrein (21) s'étendant de la face interne (14) à la face externe (22) de la lame et formant ainsi une arête tranchante (24) située sur la face interne (14),
caractérisé en ce que le sommet de chaque dent (20) présente une petite encoche (26) à concavité tournée vers le bas qui s'étend entre les bords chanfreinés (27) de ladite dent (20) et qui présente elle-même un chanfrein (28) s'étendant de la face interne (14) à la face externe (22) de la lame, les extrémités de cette encoche (26) constituant ainsi avec lesdits bords (27) de la dent deux pointes (30, 32) rapprochées l'une de l'autre.1. Set of blades intended to equip an electric knife for slicing food such as bread, comprising two adjacent blades (10, 12) arranged in parallel vertical planes and joined to each other according to their internal face (14 ), each blade (10, 12) having in its lower edge (16) a series of notches (18) leaving between them projecting teeth (20), the hollow of each notch (18) having a chamfer (21) s 'extending from the internal face (14) to the external face (22) of the blade and thus forming a cutting edge (24) located on the internal face (14),
characterized in that the top of each tooth (20) has a small notch (26) with a concavity facing downwards which extends between the chamfered edges (27) of said tooth (20) and which itself has a chamfer (28) extending from the internal face (14) to the external face (22) of the blade, the ends of this notch (26) thus constituting with said edges (27) of the tooth two points (30, 32) close to each other. 2. Jeu de lames selon la revendication 1,
caractérisé en ce que l'angle (b) entre la face interne (14)de la lame et le chanfrein (28) de la petite encoche (26) est supérieur à l'angle (c) entre ladite face interne (14) et le chanfrein (21) des échancrures (18).2. Set of blades according to claim 1,
characterized in that the angle (b) between the internal face (14) of the blade and the chamfer (28) of the small notch (26) is greater than the angle (c) between said internal face (14) and the chamfer (21) of the notches (18). 3. Jeu de lames selon la revendication 2, caractérisé en ce que l'angle (b) entre la face interne (14) de la lame et le chanfrein (28) de la petite encoche (26) est de l'ordre de soixante degrés.3. Set of blades according to claim 2, characterized in that the angle (b) between the internal face (14) of the blade and the chamfer (28) of the small notch (26) is of the order of sixty degrees. 4. Jeu de lames selon la revendication 2 ou la revendication 3, caractérisé en ce que l'angle (c) entre la face interne (14) de la lame et le chanfrein (21) d'une échancrure (18)est, dans le fond de cette échancrure, de l'ordre de trente degrés.4. Set of blades according to claim 2 or claim 3, characterized in that the angle (c) between the fa this internal (14) of the blade and the chamfer (21) of a notch (18) is, in the bottom of this notch, of the order of thirty degrees. 5. Jeu de lames selon l'une quelconque des revendications précédentes, caractérisé en ce que l'épaisseur de chaque lame va en décroissant vers les extrémités inférieures des dents (20).5. Set of blades according to any one of the preceding claims, characterized in that the thickness of each blade decreases towards the lower ends of the teeth (20). 6. Jeu de lames selon l'une quelconque des revendications précédentes, caractérisé en ce que la largeur d'une petite encoche (26) d'une pointe (30)'à l'autre (32) est de l' ordre du cinquième de la largeur d'une échancrure.(18).6. Set of blades according to any one of the preceding claims, characterized in that the width of a small notch (26) from one point (30) 'to the other (32) is of the order of one fifth the width of a notch. (18). 7. Jeu de lames selon la revendication 6, cara c t é r i s é en ce que la largeur d'une petite encoche (26) est de l'ordre d'un millimètre, la largeur d'une échancrure (18) étant alors de l'ordre de cinq millimètres.7. Set of blades according to claim 6, charac terized in that the width of a small notch (26) is of the order of a millimeter, the width of a notch (18) then being around five millimeters. 8. Jeu de lames selon la revendication 7, caractérisé en ce que la profondeur (P) de chaque échancrure (18) est comprise entre deux et trois millimètres.8. Set of blades according to claim 7, characterized in that the depth (P) of each notch (18) is between two and three millimeters. 9. Jeu de lames selon l'une quelconque des revendications précédentes, caractérisé en ce que chaque échancrure (18) a la forme générale d'un trapèze isocèle.9. Set of blades according to any one of the preceding claims, characterized in that each notch (18) has the general shape of an isosceles trapezoid. 10.Jeu de lames selon la revendication 9, caractérisé en ce que l'angle (a) entre chaque côté du trapèze et la ligne d'. alignement des pointes inférieures (30, 32) de la lame est de l'ordre de cinquante degrés.10.Game of blades according to claim 9, characterized in that the angle (a) between each side of the trapezoid and the line of. alignment of the lower points (30, 32) of the blade is of the order of fifty degrees.
EP86100205A 1985-01-30 1986-01-09 Blade assembly for an electrically operated hand knife Expired - Lifetime EP0189762B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86100205T ATE51561T1 (en) 1985-01-30 1986-01-09 BLADE SET FOR ELECTRICAL HAND KNIFE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8501286 1985-01-30
FR8501286A FR2576540B1 (en) 1985-01-30 1985-01-30 BLADE SET FOR FITTING AN ELECTRIC KNIFE

Publications (3)

Publication Number Publication Date
EP0189762A2 true EP0189762A2 (en) 1986-08-06
EP0189762A3 EP0189762A3 (en) 1987-03-25
EP0189762B1 EP0189762B1 (en) 1990-04-04

Family

ID=9315771

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86100205A Expired - Lifetime EP0189762B1 (en) 1985-01-30 1986-01-09 Blade assembly for an electrically operated hand knife

Country Status (8)

Country Link
US (1) US4677749A (en)
EP (1) EP0189762B1 (en)
AT (1) ATE51561T1 (en)
DE (1) DE3670030D1 (en)
ES (1) ES292009Y (en)
FR (1) FR2576540B1 (en)
GB (1) GB2170138B (en)
PT (1) PT81920B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2666534A1 (en) * 1990-09-12 1992-03-13 Sy Ind Ste Civile Device for cutting a block of meat into slices

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5133132A (en) * 1990-10-26 1992-07-28 Yu Ying Ming Safety blade
DE19749561C2 (en) * 1997-11-10 2000-06-21 Axel Balke Band or gate knife
USD449207S1 (en) 2001-02-27 2001-10-16 Conair Corporation Electric carving knife
US20040139617A1 (en) * 2003-01-16 2004-07-22 Mike Neshat Blades for electric knife
US20070101580A1 (en) * 2005-09-12 2007-05-10 Avello, Llc, A Massachusetts Limited Liability Corporation Powered Utility Knife
JP6049185B2 (en) * 2011-12-09 2016-12-21 株式会社日立メタルプレシジョン Sheet bundle cutting device

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE497297A (en) *
GB745794A (en) * 1953-06-02 1956-02-29 Fred Benedict Seeberger Frozen food cutter
US2750669A (en) * 1955-06-28 1956-06-19 Hohmann Joseph William Frozen food cutter
DE1935632U (en) * 1965-11-26 1966-03-31 Diogenes Werk Herder & Sohn KNIVES, ESPECIALLY MULTIPURPOSE KNIVES FOR HOUSEHOLD OR. DGL.
US3316636A (en) * 1966-05-03 1967-05-02 Imp Knife Ass Co Power operated cutting knife
US3418713A (en) * 1967-03-24 1968-12-31 Gen Electric Blade connection means for power-operated slicing knife
US3488845A (en) * 1967-09-26 1970-01-13 Imp Knife Ass Co Knife blade with double serrated edge
DE1987831U (en) * 1968-01-30 1968-06-20 Diogenes Werk Herder & Sohn HOUSEHOLD KNIVES.
US3983341A (en) * 1975-06-03 1976-09-28 Amf Incorporated Simplified slide switch

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2666534A1 (en) * 1990-09-12 1992-03-13 Sy Ind Ste Civile Device for cutting a block of meat into slices

Also Published As

Publication number Publication date
EP0189762A3 (en) 1987-03-25
ES292009U (en) 1986-05-16
EP0189762B1 (en) 1990-04-04
ATE51561T1 (en) 1990-04-15
ES292009Y (en) 1987-01-16
FR2576540A1 (en) 1986-08-01
PT81920A (en) 1986-02-01
GB8601926D0 (en) 1986-03-05
DE3670030D1 (en) 1990-05-10
GB2170138A (en) 1986-07-30
GB2170138B (en) 1989-02-01
PT81920B (en) 1992-05-29
US4677749A (en) 1987-07-07
FR2576540B1 (en) 1990-01-19

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