EP0663177B1 - Reinigungsvorrichtung - Google Patents

Reinigungsvorrichtung Download PDF

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Publication number
EP0663177B1
EP0663177B1 EP95400017A EP95400017A EP0663177B1 EP 0663177 B1 EP0663177 B1 EP 0663177B1 EP 95400017 A EP95400017 A EP 95400017A EP 95400017 A EP95400017 A EP 95400017A EP 0663177 B1 EP0663177 B1 EP 0663177B1
Authority
EP
European Patent Office
Prior art keywords
reservoir
liquid
used liquid
cleaning
vacuum
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.)
Revoked
Application number
EP95400017A
Other languages
English (en)
French (fr)
Other versions
EP0663177A1 (de
Inventor
Jean Alazet
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.)
Famulus
Original Assignee
Famulus
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
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Application filed by Famulus filed Critical Famulus
Publication of EP0663177A1 publication Critical patent/EP0663177A1/de
Application granted granted Critical
Publication of EP0663177B1 publication Critical patent/EP0663177B1/de
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/29—Floor-scrubbing machines characterised by means for taking-up dirty liquid
    • A47L11/30—Floor-scrubbing machines characterised by means for taking-up dirty liquid by suction
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L1/00—Cleaning windows
    • A47L1/06—Hand implements
    • A47L1/08—Hand implements with provision for supplying liquids, e.g. cleaning agents
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
    • A47L11/4002—Installations of electric equipment
    • A47L11/4005—Arrangements of batteries or cells; Electric power supply arrangements
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
    • A47L11/4013—Contaminants collecting devices, i.e. hoppers, tanks or the like
    • A47L11/4016—Contaminants collecting devices, i.e. hoppers, tanks or the like specially adapted for collecting fluids
    • A47L11/4019—Fill level sensors; Security means to prevent overflow, e.g. float valves
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
    • A47L11/4036—Parts or details of the surface treating tools
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
    • A47L11/4036—Parts or details of the surface treating tools
    • A47L11/4044—Vacuuming or pick-up tools; Squeegees
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
    • A47L11/4075—Handles; levers
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
    • A47L11/4077—Skirts or splash guards
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
    • A47L11/408—Means for supplying cleaning or surface treating agents
    • A47L11/4088—Supply pumps; Spraying devices; Supply conduits

Definitions

  • the invention relates to a device for cleaning by spreading cleaning liquid and used liquid suction.
  • Document EP 0.422.977 A1 by the same inventor describes a suction device with squeegee for elimination of dirty water when cleaning certain surfaces.
  • the squeegee has, according to a variant particular realization of a step cut along of one of the edges of its working end and has at least one suction channel arranged inside the part of the body of this squeegee which is located directly below of this step cut.
  • the known device comprises, according to a variant particular realization of a liquid tank of cleaning feeding through a series of small channels a spreading member such as a brush, and a reservoir dirty cleaning liquid to collect the liquid cleaning room after aspiration by a roller pump.
  • All of the above elements are mounted at inside a housing comprising a sleeve intended for receive a handle or a handful of gripping.
  • Document DE 24.24.218 A1 describes an apparatus for cleaning for windows, facades, boards or the like, comprising a working head arranged at the end of a hollow handle, said working head comprising means for supplying clean liquid, means for distributing said liquid liquid on the surface to be cleaned and a squeegee cleaning.
  • a tubular enclosure in the shape of a hollow handle contains a tank of cleaning liquid connected to said means for supplying cleaning liquid.
  • This device is generally satisfactory, but requires periodically wringing an absorption sponge liquid in a receiving container.
  • the object of the invention is to remedy the disadvantages of the known technique, creating a new portable cleaning device, convenient to use and economical manufacturing.
  • the subject of the invention is a cleaning device planks, floors, tiles, walls or smooth surfaces analogues by spreading cleaning liquid and by suction of used liquid, of the type comprising combination: a work head or cleaning device comprising means for supplying cleaning liquid; of means for distributing said liquid on the surface to clean and a cleaning squeegee; a speaker tubular shaped hollow handle containing a reservoir of cleaning liquid connected to said means for supplying cleaning fluid, and a grip handle; characterized in that the device further comprises a used liquid reservoir at least partially contained in said tubular enclosure, as well as means for placing said used liquid tank under vacuum, so as to suck the used liquid through an orifice of used liquid suction provided on the squeegee and a used liquid suction pipe.
  • the tubular enclosure comprises two watertight overlapping compartments with respect to the other, a lower compartment forming the reservoir used liquid, an upper compartment forming the cleaning fluid tank, suction tubing of air passes axially through the cleaning liquid tank and is connected outside of it with the vacuum means carried by the grip handle.
  • the tubular enclosure has three compartments: one lower compartment constituting the liquid reservoir used, an intermediate compartment constituting the housing of vacuum means and a compartment upper constituting the cleaning liquid tank, the grip handle being removably mounted so as to constitute the plug of the filling opening of the cleaning fluid tank.
  • Figure 1 schematically shows a view in exploded perspective of a first embodiment of the device according to the invention.
  • Figure 2 shows schematically a view in cross section of a device cleaning member according to Figure 1.
  • Figure 3 shows schematically in section transverse a central part of the device according to the figure 1.
  • Figure 4 shows schematically in section transverse a head of the device according to FIG. 1.
  • Figure 5 shows schematically a view of exploded top of a second embodiment of the invention.
  • Figure 6 schematically shows a view in cross section of the device cleaning member according to figure 5.
  • Figure 7 shows schematically in section longitudinal in their service position the pipe wastewater suction line, the air suction pipe and the vacuum means of the device of FIGS. 5 and 6.
  • Figure 8 schematically shows a view in longitudinal section of the reloading means electric batteries of the device of figures 5 to 7.
  • Figure 9 shows schematically a view of detail in enlarged section of the sealing means of the cleaning liquid supply line for the device of Figures 5 to 8.
  • Figure 10 schematically shows a view of profile of the push button shown in Figure 5.
  • a device according to the invention designated as a whole by the reference 1 is intended in particular for cleaning large areas smooth, such as floors or tiles.
  • the device 1 comprises a cleaning member 2, a central part 3 and a handle 4 nestable sequentially tightly with each other at means of conformations and seals appropriate.
  • the cleaning member 2 includes a squeegee 5 monobloc made of elastomer, rubber or similar material.
  • the squeegee 5 has a step shape 6 and at at least one central channel 7 communicating through a nozzle 8 with a suction pipe 9 of the used liquid spilled on floor.
  • the cleaning member 2 preferably has a housing 10 for receiving the squeegee 5 so as to facilitate replacement.
  • the spreading member 11 is used for regularly spreading clean liquid opening out at least one central pipe 12 for supplying liquid clean opening substantially in the median plane longitudinal L through an orifice 12a.
  • the cleaning member 2 has substantially a T-shape, whose branch 14 corresponds to a conduit watertight fitting with the lower part of the central part 3.
  • the cleaning member 2 is hollow and has a used liquid drain plug 18, so that after tight connection of the cleaning member 2 to the part central 3, the interior 19 of the cleaning member forms with the inside 20 at the bottom of the central part 3 a used liquid suction tank.
  • the reservoir 19-20 thus formed receives the liquid used by pipe 9 opening into it, the resulting suction a depression created by the delivery tubing depression 21 integral with the central part 3 of the device.
  • the central part 3 has two plugs sealing rings 22 and 23 between the wall outer 24 tubular, rectangular section with edges rounded, elliptical or similar and the tubing of depression 21 above.
  • the plugs 22, 23 define between them a tank 25 of cleaning liquid capable of being supplied thanks to the filling plug 26.
  • the integrated reservoir 25 in the central part 3 in the form of a sleeve is separated from the tank 20 by the plug 22 permanently fixed for example by gluing, heat sealing or a similar process and communicates with the cleaning fluid supply duct 12 via a pipe 26a for crossing the plug 22 and communication with line 12 supply of clean cleaning liquid.
  • the control 29 acts by pressing on the end of a elastic conformation 28 in cantilever which, in position rest, closes the admission of the pipe 26a and, in support position towards the bottom of the rod 29, raise the plug 27 and feeds the pipe 26a.
  • the rod 29 mounted to slide in the part central 3 and passing through the upper plug 23 comprises an upper end 29a which fits and cooperates with an actuator 30 prisoner sliding in the head 4 of the device according to the invention.
  • the head 4 has an enlarged shape constituting a housing 31 in which a flared part 32 is mounted forming a body for a suction turbine 33 capable of creating a vacuum through the pipe 21 in the tank 20 used liquid suction and discharge air sucked outwards through suitable holes 34.
  • the turbine 33 is rotated by a small electric motor 35 arranged coaxially above turbine 33; the electric motor 35 is powered by a set of 36 batteries in series with a switch power supply 37 and rechargeable using a connector coaxial 38.
  • the actuation of the operating member 30 is performed by means of a sliding button 39, while the mechanical fixing of the head 4 on the central part 3 results from the engagement of a push button 40 with a corresponding orifice of the wall 24 of the central part.
  • the device comprises an enclosure essentially tubular with two compartments impervious to one another, namely the tank 19-20 used liquid in immediate contact with the cleaning 5, and the cleaning liquid tank 25 crossed by the air suction pipe 21, this the latter being connected in the upper part by means of depression 32-36 carried by the grip handle 4.
  • the opposite ends of the suction pipe of used liquid 9 and air suction pipe 21 are arranged along substantially the same vertical axis and are spaced axially. This ensures that the liquid sucked by the pipe 9 does not risk entering the tubing 21.
  • the height of pipe 9 inside the tank 19-20 is sufficient to give the device a collection capacity corresponding to the surface of a room to be cleaned.
  • Figures 5 to 10 show a second mode of realization of the invention.
  • the parties presenting the same functions as in the example embodiment above, have the same references.
  • the tubular enclosure of the device 1 is divided into three compartments stepped vertically: the lower compartment constituting the liquid reservoir used 19-20, the intermediate compartment 41 constituting the housing of the vacuum means and the compartment upper constituting the cleaning liquid tank 25.
  • this set is formed in one piece by plastic blowing, the intermediate compartment being obtained by pressing in and approximation of the two walls of the enclosure as we see in particular in Figure 6.
  • used liquid tank has an extension at its base transverse 19 provided with a drain plug 18, this so to give the device the general appearance of a broom classic household.
  • the bottom of the extension 19 has an opening median for the passage of the suction pipe 9 and, come of material, two nipples 42 for the snap-fastening of a head cleaning 43 which carries the squeegee 5 and the means for spreading the cleaning liquid represented here in the form brush bristles 11 ( Figure 7).
  • Line 44 is intended to bring the cleaning liquid by gravity from the tank 25 to feed port 45 at the end bottom of the tank 19.
  • a setting direct communication (not shown) between the tank 25 and line 44.
  • a flexible cable 47 which extends over the entire height of the device and the end of which lower is fitted with a conical plug 48 (figure 9) cooperating with the orifice 46.
  • the upper end of the flexible cable 49 opens out above the tank 25 into the enclosure formed between the external wall of the device and the filler neck 50 of the reservoir 25 where it is mounted by spring means recalling it to maintain the plug 48 in the closed position of the orifice 46.
  • the opening movement of port 46 will be controlled by sliding button 30 (figure 10) which forms the sliding closure cover on one side of the device at the handle 4.
  • sliding button 30 (figure 10) which forms the sliding closure cover on one side of the device at the handle 4.
  • an opening (not shown) is made in line 44 at this enclosure.
  • Line 45 diametrically opposite the line 44 is also equipped with a flexible cable 51 which terminates in the intermediate compartment 41 to activate the electric switch of the motor 35.
  • cable 46 cable 51 is mounted at its end upper by means of return spring and operated by a button 30 symmetrical to the previous one.
  • pipe 45 could be interrupted below switch 37. In the example shown, it is however extended until the lower end of the device for reasons aesthetic balance.
  • compartment 41 housing the engine 35, the turbine 33 and the batteries 36 is closed by a removable cover 52 provided with air exhaust vents 34 drawn by the turbine 33.
  • the compartment 41 comprises also vents 34 symmetrical to those of the cover 52.
  • tubing 21 and pipe 9 were arranged with a slight offset between their axes of vertical symmetry, in the present example of realization they are aligned on the same axis.
  • the ends in look of pipe 9 and tubing are separated axially by a space allowing the used liquid to fall back into the tank 19-20, along the pipe 9 without risk of entering the tubing 21.
  • the end of the tubing 21 next to pipe 9 is topped with a partition transverse 53 connected to the tubing by legs.
  • the partition 53 is of larger section than that of the tubing so as to constitute a cap deflector that prevents liquid from entering the tubing in case the user raises the device for example when he wants to change the squeegee 5 or the brush 11.
  • this provision could be made by a partition closing the end of the tubing 21, radial openings being made in said tubing in the immediate vicinity of the partition.
  • the tubing 21 houses a brush 54 whose hairs appear in the end openings of the tubing, the handle of this bottle brush being oriented towards the turbine 33.
  • This bottle brush 54 has two functions. Firstly, when housed in tubing 21, it prevents large impurities which could be sucked up by the depression (e.g. cigarette butts or analogues) to be able to enter the tubing 21.
  • the depression e.g. cigarette butts or analogues
  • Figure 8 illustrates the means of recharging the batteries of the device in the embodiment of the Figure 5.
  • This recess allows the whole device to come fit on a frame 56 fixed to the wall M by a stud 57 and connected to the electrical network by the cord 58.
  • the socket (not shown) will then be equipped with a usual transformer.

Landscapes

  • Cleaning In General (AREA)
  • Brushes (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Nozzles For Electric Vacuum Cleaners (AREA)

Claims (10)

  1. Vorrichtung zum Reinigen von Bohlen, Böden, Fliesen, Mauern oder vergleichbaren ebenen Oberflächen durch Aufbringen von Reinigungsflüssigkeit und Absaugen von Gebrauchtflüssigkeit, des Typs, der in Kombination aufweist: einen Arbeitskopf (2) oder Reinigungselement mit Mitteln zum Zuführen von Reinigungsflüssigkeit; Mittel zum Verteilen besagter Flüssigkeit auf der zu reinigenden Oberfläche und eine Reinigungsrakel; einen rohrförmig umschlossenen Raums in Form eines hohlen Stiels, der einen mit besagten Mitteln (12) zum Zuführen von Reinigungsflüssigkeit verbundenen Reinigungsflüssigkeitsbehälter trägt; und einen Haltegriff, dadurch gekennzeichnet, daß die Vorrichtung zusätzlich einen zumindest teilweise in besagtem rohrförmig umschlossenen Raum beinhalteten Gebrauchtflüssigkeitsbehälter (19-20) sowie Mittel zum unter Unterdruck Setzen des besagten Gebrauchtflüssigkeitsbehälters derart aufweist, daß die Gebrauchtflüssigkeit durch eine an der Rakel vorgesehene Absaugöffnung und eine Absaugleitung für Gebrauchtflüssigkeit abgesaugt wird.
  2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Gebrauchtflüssigkeitsbehälter (19-20) durch ein dichtes Zusammenbauen des Arbeitskopfes oder des Reinigungselements (2) und des Innenbereichs (20) des unteren Teils des rohrförmig umschlossenen Raums (3) gebildet ist.
  3. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Gebrauchtflüssigkeitsbehälter (19-20) einstückig ausgebildet ist (Figur 5) und eine Durchgangsöffnung für eine Absaugleitung (9) für Gebrauchtflüssigkeit aufweist.
  4. Vorrichtung nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß der Gebrauchtflüssigkeitsbehälter (19-20) T-förmig ausgebildet ist und an seinem Fuß einen mit einem Ablaßstopfen (18) versehenen transversalen Fortsatz (19) aufweist.
  5. Vorrichtung nach einem der vorangegangenen Ansprüche, dadurch gekennzeichnet, daß das Ende der Absaugleitung (9), durch welche die Gebrauchtflüssigkeit in den Gebrauchtflüssigkeitsbehälter einströmt, und das Ende des Luftansaugstutzens (21), durch welchen der besagte Behälter unter Unterdruck gesetzt wird, genau in einer Achse und axial beabstandet derart angeordnet sind, daß jegliches Absaugen der Gebrauchtflüssigkeit durch den Luftansaugstutzen (21) verhindert wird.
  6. Vorrichtung nach einem der vorangegangenen Ansprüche, dadurch gekennzeichnet, daß der Reinigungsflüssigkeitsbehälter durch einen Haltegriff abgeschlossen wird.
  7. Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, daß der Haltegriff die Mittel zum unter Unterdruck Setzen des Gebrauchtflüssigkeitsbehälters trägt.
  8. Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, daß der Haltegriff am oberen Ende des Reinigungsflüssigkeitsbehälters angeordnet ist, während die Mittel zum unter Unterdruck Setzen zwischen dem Reinigungsflüssigkeitsbehälter und dem Gebrauchtflüssigkeitsbehälter angeordnet sind.
  9. Vorrichtung nach einem der vorangegangenen Ansprüche, dadurch gekennzeichnet, daß eine transversale Trennwand zwischen dem Stutzen zum unter Unterdruck Setzen des Gebrauchtflüssigkeitsbehälters und der Absaugleitung derart vorgesehen ist, daß ein Deflektordeckel zur Verhinderung des Absaugens der Gebrauchtflüssigkeit in den Stutzen zum unter Unterdruck Setzen gebildet wird.
  10. Vorrichtung nach einem der vorangegangenen Ansprüche, dadurch gekennzeichnet, daß der Stutzen zum Absaugen und zum unter Unterdruck Setzen des Gebrauchtflüssigkeitsbehälters einen Filter zum Zurückhalten von Staub und Verunreinigungen aufweist.
EP95400017A 1994-01-14 1995-01-04 Reinigungsvorrichtung Revoked EP0663177B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9400348A FR2715053B1 (fr) 1994-01-14 1994-01-14 Dispositif de nettoyage par épandage de liquide nettoyant et par aspiration de liquide usagé.
FR9400348 1994-01-14

Publications (2)

Publication Number Publication Date
EP0663177A1 EP0663177A1 (de) 1995-07-19
EP0663177B1 true EP0663177B1 (de) 1998-06-10

Family

ID=9459025

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95400017A Revoked EP0663177B1 (de) 1994-01-14 1995-01-04 Reinigungsvorrichtung

Country Status (8)

Country Link
US (1) US5603139A (de)
EP (1) EP0663177B1 (de)
JP (1) JPH0833599A (de)
CA (1) CA2139915A1 (de)
DE (1) DE69502841T2 (de)
DK (1) DK0663177T3 (de)
ES (1) ES2120137T3 (de)
FR (1) FR2715053B1 (de)

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CA2139915A1 (fr) 1995-07-15
DE69502841T2 (de) 1999-02-04
US5603139A (en) 1997-02-18
FR2715053A1 (fr) 1995-07-21
FR2715053B1 (fr) 1996-03-15
DE69502841D1 (de) 1998-07-16
DK0663177T3 (da) 1999-03-22
ES2120137T3 (es) 1998-10-16
JPH0833599A (ja) 1996-02-06
EP0663177A1 (de) 1995-07-19

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