AU2001100627B4 - Apparatus for loading objects into bags - Google Patents

Apparatus for loading objects into bags Download PDF

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Publication number
AU2001100627B4
AU2001100627B4 AU2001100627A AU2001100627A AU2001100627B4 AU 2001100627 B4 AU2001100627 B4 AU 2001100627B4 AU 2001100627 A AU2001100627 A AU 2001100627A AU 2001100627 A AU2001100627 A AU 2001100627A AU 2001100627 B4 AU2001100627 B4 AU 2001100627B4
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AU
Australia
Prior art keywords
loading
fork
meat
conveyor
bag
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.)
Ceased
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AU2001100627A
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AU2001100627A4 (en
Inventor
Melville Richard
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.)
Machinery Developments Ltd
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Machinery Developments Ltd
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Filing date
Publication date
Application filed by Machinery Developments Ltd filed Critical Machinery Developments Ltd
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Publication of AU2001100627A4 publication Critical patent/AU2001100627A4/en
Publication of AU2001100627B4 publication Critical patent/AU2001100627B4/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B25/00Packaging other articles presenting special problems
    • B65B25/06Packaging slices or specially-shaped pieces of meat, cheese, or other plastic or tacky products
    • B65B25/065Packaging slices or specially-shaped pieces of meat, cheese, or other plastic or tacky products of meat
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B5/00Packaging individual articles in containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, jars
    • B65B5/04Packaging single articles
    • B65B5/045Packaging single articles in bags

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Intermediate Stations On Conveyors (AREA)

Description

-1-
AUSTRALIA
PATENTS ACT 1990 COMPLETE
SPECIFICATION
FOR AN INNOVATION
PATENT
ORIGINAL
Name of Applicant: Machinery Developments Ltd Actual Inventor: Richard Melville Address for Service: BALDWIN SHELSTON WATERS MARGARET STREET SYDNEY NSW 2000 Invention Title: 'APPARATUS FOR LOADING OBJECTS INTO BAGS' The following statement is a full description of this invention, including the best method of performing it known to us File: 33951AUP00 5846/3 APPARATUS FOR LOADING OBJECTS INTO BAGS BACKGROUND OF THE INVENTION FIELD OF THE INVENTION The present invention relates generally to an apparatus that loads objects into bags; particularly an apparatus that loads various sizes of cuts of meat into plastic bags.
BACKGROUND
ART
There is an urgent need in the meat packing industry to reduce labor costs and improve overall efficiency. One area in which the meat packing industry can achieve these objectives is the area of packing cuts of meat into plastic bags.
As an animal carcass is processed in a meat packing plant, the carcass travels along various conveyors and is separated into the various cuts of meat at different workstations. Meat packing plants pack various cuts of meat, such as striploins, tenderloins and rumps, into plastic bags prior to shipment. In some meat plants, the various cuts of meat are sorted and each cut is eventually placed on a specific conveyor with like cuts and then delivered to a workroom where it is then packed into a package, such as a plastic bag. In other plants, the various cuts of meat are not sorted and are all placed on the same conveyor, where the various cuts are packed into plastic bags.
The process of loading the cuts of meat into plastic bags has been done manually by a person who picks the cut of meat up off the line and places it into a plastic bag and then returns the bagged meat onto another line or conveyor so it can travel to the next station. Machines have also been used in an effort to automate the process of loading cuts of meat into plastic bags.
Traditional manual methods and machines used by the meat packing industry have proved to have disadvantages and limitations. For example, some machines use a pneumatic ram that forces or stuffs the meat into the bag. These machines can only handle certain widths of cuts of meat and cannot be used to pack cuts that are not rigid and are easily deformable. As a result, additional lines are needed in a meat packing plant to handle the cuts of meat that cannot be fed into this type of machine. The additional lines take up valuable floor space that could be better used for other functions.
Another known machine for bagging cuts of meat is a belt loader machine. Belt loaders have numerous conveyor belts that transport a cut of meat into a bag as the bag is pulled over the ends of the belts. To accommodate the number of conveyor belts and the thickness of each of the conveyor belts, use of larger, oversized bags is required. Furthermore, a worker must have a high degree of skill to efficiently operate and bag meat on a belt loader machine.
SUMMARY OF THE INVENTION According to one aspect of the present invention there is provided an apparatus for loading an object into a bag including: a frame; a loading fork movably mounted to said frame; a loading horn for holding a bag, said loading horn and said loading fork being movable relative to each other.
According to a further aspect of the present invention there is provided a system for loading an object into a bag including: an infeed conveyor; -4a loading apparatus located downstream of said infeed conveyor, said loading apparatus including, a frame and a loading fork movably mounted to said frame; and a take-away conveyor located downstream of said loading apparatus, wherein said loading fork moves in a first direction along said frame from a position adjacent said infeed conveyor where said loading fork can receive the object, to a second position adjacent said takeaway conveyor where said loading fork can transfer the object to said take-away conveyor, wherein the object is loaded into a bag between said first position and said second position, and after the object is transferred to said take-away conveyor said loading fork moves along said frame in a second direction opposite said first direction back to said first position.
BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a side view of a portion of a meat packing line which includes the loading apparatus of the present invention.
FIG. 2 is a perspective view of the apparatus of the present invention with a cut of meat shown on an infeed conveyor and a take-away conveyor.
FIG. 3 is a perspective view of the apparatus shown in FIG. 2, with a cut of meat shown just prior to reaching the end of the infeed conveyor.
FIG. 4 is a perspective view of the apparatus shown in FIG. 2, with the cut of meat shown being loaded onto a loading fork.
FIG. 5 is a perspective view of the apparatus shown in FIG. 2, with the cut of meat shown on the loading fork and inside a plastic bag.
FIG. 6 is a perspective view of the apparatus shown in FIG. 2, with the bagged cut of meat shown being transferred to a take-away conveyor.
FIG. 7 is a perspective view of a loading fork that can be used with the apparatus of the present invention.
FIG. 8 is a perspective view of a loading horn that can be used with the apparatus of the present invention, shown in a closed position.
FIG. 9 is a perspective view of the loading horn or FIG. 8, shown in an open position.
DETAILED DESCRIPTION OF THE DRAWINGS While the present loading device is susceptible of several constructions, there is shown in FIG. 1, a system and apparatus for loading cuts of meat into bags according to the present invention. The system shown is adapted for use in a meat packing plant and designed to be placed in a production line that carries meat from a main conveyor 10, to a vacuum pack station 12. The upstream or infeed conveyor assembly of the system includes an accumulating station 14, an infeed conveyor 16, a scale conveyor 17 and a timing conveyor 18 which transport cuts of meat to a loading fork carriage assembly 22 which bags the cuts of meat. The downstream or take-away conveyor assembly of the system includes a take-away conveyor 20 which transports the bagged meat to the vacuum pack station 12. In between the upstream conveyor assembly and the downstream conveyor assembly is the loading fork carriage assembly 22.
The main conveyor 10 transports a product, such as a cut of meat, from the cutting area (not shown) to an optional accumulating station 14. At the accumulating station 14, the cuts of meat are accumulated and held until they are placed onto the infeed conveyor 16. The infeed conveyor 16 and scale conveyor 17 travel at higher speeds than the timing conveyor 18 thereby separating or spacing the individual cuts of meat before they reach the timing conveyor 18. The timing conveyor 18 can have guides (not shown) thereon. The guides center the cuts of meat so that they are positioned exactly in the middle of the timing conveyor 18 as they are fed to the loading fork carriage assembly 22.
The timing conveyor 18 moves at a controlled speed based upon the separation or spacing between the cuts of meat to be bagged as generated by the speed differences between the timing conveyor 18 and the infeed conveyor 16 and scale conveyor 17. By controlling the speed of the timing conveyor 22 along with the alignment and separation of the cuts of meat, a desired spacing and timing between the cuts of meat reaching the end of the timing conveyor 22 is achieved.
A sensor can be provided on or near the scale conveyor 17 or timing conveyor 18 to detect each cut of meat as it passes a certain point. When a cut of meat is detected, the sensor sends a signal to a controller indicating that a cut of meat will be delivered to the carriage fork assembly 22 at a known time.
The scale conveyor 17 can contain an in-line belt scale that can weigh each cut of meat to be bagged. An automatic cut-sizing device 24 can also be installed on or near the scale conveyor 17 or the infeed conveyor 16 to detect information about the size of the cut of meat. The sensor, the cut-sizing device 24 and belt scale can all be coupled to a controller in order to send information to the controller that can be used for a variety of purposes, some of which are described below. A variety of exemplary uses are also described in PCT/NZ97/00127, which is hereby incorporated by reference.
Also shown in FIG. I is a wall 30 of six of machines 31, 32, 33, 34, 35 and 36 that produce plastic bags. These machines 31, 32, 33, 34, 35 and 36 are shown schematically, but can be of the type described in U.S. Patent No. 5,618,252 and 5,816,990, which are hereby -7incorporated by reference. The machines 31, 32, 33, 34, 35 and 36 can contain various widths of plastic material so that a variety of width bags can be produced depending on the size of the cut of meat to be bagged. The width of the bag to be produced can be determined from the information the controller receives from the in-line belt-scale and cut sizer 24. The controller can be coupled to the machines 31, 32, 33, 34, 35 and 36 and can send a signal to instruct a specific machine to make a bag for a particular cut of meat. The information can also be used to print certain information about the cut of meat directly onto the bag or on tags, labels or other identifying devices that can be used in association with the bags or meat.
As shown in FIGS. 2-6, the loading fork carriage assembly 22 has an upstream frame I 0 support member 40 and a downstream frame support member 42. The upstream frame support member 40 is positioned near and partly underneath, the timing conveyor 18. The downstream frame support member 42 is positioned near the take-away conveyor 20. The two frame support members 40 and 42 support a loading fork frame 44. The loading fork frame 44 is rotationally mounted to the frame support members 40 and 42 by pins 46 and 48. A motor 51 on the upstream support member 40 controls the rotational movement of the frame 44 and causes the frame 44 to rotate about the pins 46 and 48. The frame 44 has two sets of rails 50 and 52, the first set of rails 50 is shown on the upper side of the frame 44 in FIGS. 2-5 and the second set of rails 52 is shown on the lower side of the frame 44 in FIGS. 2-5. In FIG. 6, the set of rails 50 is on the lower side and the set of rails 52 is on the upper side. The rails 50 and 52 can be I-beams, rods, box sections or any other commonly used member that allows loading forks 60 and 62 to move longitudinally with respect to the frame 44.
-8- One of the forks 60 is mounted on the first set of rails 50. The other fork 62 is mounted on the second set of rails 52. The loading forks 60 and 62 are movable along the rails 50 and 52 by a drive belt. The belt is driven by a motor and drives both the forks 60 and 62 along the rails and 52, respectively. The upper fork 60 moves from the position shown in FIG. 2 along its rails 50 in the downstream direction, from the timing conveyor 18 towards the take away conveyor 20, while the lower fork 62 moves along its rails 52 in reciprocal opposite movement in an upstream direction. The upper fork 60 advances along the rails 50 at the same speed and direction as the timing conveyor 18, so that, as the cut falls off the end of the timing conveyor 18 the end of the loading fork 60 meets the leading edge of the cut of meat.
Referring now to FIG. 7, one of the forks 60 is shown. The loading fork 60 has a center shoe 70 which has a left portion 72 and right portion 73 which slope upwardly and outwardly from a lower central point. The center shoe 70 is preferably approximately 100 mm wide and 800 mm long. The center shoe 70 is slightly cupped or V-shaped to hold the cut of meat. Due to its shape the center shoe 70 is able to hold smaller cuts of meat as well as larger cuts of meat.
The fork 60 also has two inner fingers 74 and 76 Preferably, the inner fingers 74 and 76 are stainless steel tubes which are approximately 10 mm in diameter. The inner fingers 74 and 76 are preferably approximately 700 mm long. The back ends 78 and 80 of the inner fingers 74 and 76 extend approximately 20 mm behind a loading fork cross piece 82 and the front ends 83 and 84 of the fingers 74 and 76 extend approximately 700 mm forward of the cross piece 82.
The fork 60 also has two outer fingers 86 and 88. Preferably, the outer fingers 86 and 88 are also stainless steel tubes which are approximately 10 mm in diameter and approximately 600 mm long. The inner fingers 74 and 76 and outer fingers 86 and 88 are preferably generally -9tubular and hollow, but can be any shape that will adequately support the cuts of meat. The inner fingers 74, 76 are positioned slightly higher than the center shoe 70, and the outer fingers 86 and 88 are positioned slightly higher than the inner fingers 74 and 76. The overall configuration of the fork 60 is generally V-shaped to hold the cuts of meat better and to be able to hold a variety of sizes of meat. Additionally, the V-shaped loading fork 60 enables the outer fingers 86 and 88 to make contact with the loading horn 110 while allowing the inner fingers 74 and 76 to pass underneath the lowest surface of the loading horn 110 as discussed below.
The hollow inner fingers 74 and 76 allow air to be blown therethrough. A compressor (not shown) can be coupled to the fingers 74 and 76 by tubes 77 and 79 and blow compressed air into the back ends 78 and 80 of the fingers 74 and 76 through the tubes 77 and 79. Near the back ends 78 and 80 of the fingers 74 and 76, there are two venting holes 90 and 92, which are approximately 3mm in diameter. The holes 90 and 92 are drilled through the fingers 74 and 76 to allow more air to enter the fingers 74 and 76 when the compressed air is being blown into the fingers 74 and 76 by the compressor. The air is blown through the inner fingers 74 and 76 and out holes 94 and 96 in the front ends 83 and 84 of the fingers 74 and 76. A deflector 100 is positioned at the front end 83 and 84 of each fingers 74 and 76 to direct the air slightly upwardly to facilitate opening the bag by lifting the bag away from the cut of meat, making it easier to pull the bag over the cut of meat and fork 60 (as will be described below in more detail). The deflectors 100 may be integrally formed from fingers 74 and 76 by cutting a slot at the top surface near the end of each finger 74 and 76. In one embodiment of the present invention, inner fingers 74 and 76 are stainless steel hollow tubes with capped front ends 83 and 84. In this embodiment, the deflectors 100 are formed by cutting and removing a portion of the top surface of the capped inner fingers 74 and 76 at a 45 degree angle leaving the capped ends in place as deflectors 100. In such an embodiment, air flows through the inner fingers 74 and 76, makes contact with the sloped capped ends of fingers 74 and 76, and is directed upwards at a 45 degree angle through the opening created by the removal of the portion of the top surface of the inner fingers 74 and 76.
The fork 60 is supported by a frame 98 which is attached to the cross piece 82 of the fork so that the fork 60, when mounted on the frame 98 looks like a sideways U with the open end forward and half the leading edge of the lower arm removed. The objective is to centrally support the fork 60, while allowing the bag to be pulled the full length of the fork 60 without restriction.
Referring now to FIGS. 8 and 9, the loading horn 110 can have two side plates 112 and 114, which are generally triangular in shape with the apexes 116 and 118 to the front edge of the side plates 112 and 114 so that a bag can be easily pulled onto the front edge of the loading horn 116 and 118. In the closed position shown in FIG. 8, the rear edges of the side plates 112 and 114 form an opening that is preferably approximately 100mm wide. The front edges of the side plates 112 and 114 are virtually closed to allow the bag to be easily pulled over.
Once the bag is pulled onto the loading horn 110 a sensor (not shown) can detect the placement of the bag and the horn 110 is moved to an open position shown in FIG. 9. The front edges of the side plates 112 and 114 are pulled apart by pneumatic rams 120 and 122 (see also FIGS. 3 and 4) until further expansion of the plates 112 and 114 is restricted by the bag, thus holding the bag in place on the loading horn 110. The rams can also stretch the bag outwardly to allow a larger cut of meat to be placed in the bag.
11 The front edges of the loading horn 110 may be flanged slightly outwardly so the outer fingers 86 or 88 of the loading fork 60 can hit the horn 110 and push the horn 110 outwards allowing the entire fork 60 to pass inside the horn 110. At the same time however, the flange should be small enough to allow the outer fingers 86 and 88 to pass on the outside of the loading horn 110 when the bag is only wide enough to be pulled around the inner fingers 74 and 76. The loading horn 110 can be positioned such that the lowest surface of the loading horn 110 is elevated so only the outer fingers 86 and 88 of the fork 60 are positioned high enough to contact the loading horn 110.
In one embodiment of the invention, the loading fork 60 retracts from the loading horn 110 once a bag has been pulled over the cut of meat. Once the cut has passed through the loading horn 110 and the bag has been pulled off it by the action of the loading fork 60 passing through the horn 110, the pneumatic rams 120 and 122 return the loading horn 110 from its open position (FIG. 9) back to the closed position (FIG. thus preventing the cut from returning with the fork 60 as the loading fork 60 retracts and allowing the loading horn 110 to be ready to accept the next bag. In another embodiment of the invention, the loading fork 60 continues through the loading horn 110 along with the bagged cut of meat.
The loading horn 110 is mounted to a frame 130 that suspends the horn 110 over the loading fork frame 44. The horn 110 can be fixedly mounted on to the frame 44, or can be mounted on rails 132 and 134 so that the horn 110 can move relative to the loading fork frame 44.
Referring now to FIGS. 3-6, operation of the loading device will be described. The loading fork 60, receives the cut of meat from the timing conveyor 18. Because the meat is 12positioned in the center of the timing conveyor 18, it falls onto the center of the loading fork (FIG. The loading horn 110 has a bag over it and is moved to its open position prior to the fork 60 reaching it. Then the fork 60, carrying the cut of meat on the center shoe 70 and fingers 74, 76, 86 and 88 (depending on the size of the cut of meat) travels along the rails 50 and through the open loading horn 110 over which a bag (not shown) of the correct size has been pulled. The loading fork 60 can continue with the product now inside the bag, and emerge on the other side of the horn 110, removing the bag from the horn 110 (FIG. As shown in FIG. 6, once the upper loading fork 60 with the cut of meat encased within the bag reaches the end of the first set of rails 50, the frame 44 rotates 180 degrees so that the upper loading fork 60 with the bagged product is positioned upside down and becomes the lower loading fork and the other, empty fork 62 is brought into an upright position, just underneath the timing conveyor 18 becoming ready to receive the next cut of meat.
The bagged product is suspended from the loading fork 60. The take-away conveyor can be positioned underneath the upside down fork 60 containing the bagged, suspended product.
The take-away conveyor 20 could rise, taking the weight of the product off the loading fork and thereby pulling the bagged product from the fork 60 and transporting the product to its destination, leaving the loading fork 60 behind. Other options for removing a bagged cut of meat from the fork 60 can include, but are not limited to, any of the following alternatives.
The take-away conveyor 20 can be controlled by weight sensors (not shown) such that when the sensors detect a bagged cut of meat, the take-away conveyor 20 lifts the cut from the loading fork 60 and transport the cut away. The loading fork 60 can be hinged such that the loading fork 60 may pivot in its inverted horizontal position and drop a suspended bagged cut of 13meat a short distance onto the take-away conveyor 20. Similarly, the tipping loading fork may come to rest on the take-away conveyor 20 allowing the take-away conveyor 20 to assume the load and remove the bagged cut of meat from the loading fork 60. Furthermore, an unloading arm (not shown) can sweep a suspended bagged cut of meat from the loading fork onto the take-away conveyor Alternatively, when the loading fork 60 carrying a bagged cut of meat reaches the end of the upper rails 50, the loading fork 60 may come to a stop and a bagged cut of meat can be manually removed from the loading fork 60 and placed on the take-away conveyor 20 before the frame 44 rotates 180 degrees. Similarly, a bagged cut of meat may be swept off the loading fork 60 onto the take-away conveyor 20 by an unloading arm prior to the frame 44 rotation.
The loading forks 60 and drive belt may be configured such that when the loading fork travelling along the upper rails 50 reaches the end of the upper rails 50 the drive belt passes over a horizontal pulley (not shown) thereby tipping the loading fork 60 from a horizontal position along the upper rails 50 through a vertical position and into an inverted horizontal position along the lower rails 52. In this configuration, the bagged cut of meat can fall from under its own weight from the tipping loading fork 60 to the take-away conveyor The loading horn 110 can be further enhanced by a vacuum head or heads (not shown), which secure the bag to the loading horn 110 as the operator places the bag in position.
Further, the bag can be conveyed to the loading horn 110 by a vacuum head (not shown).
The vacuum head selects the bag produced by a bagger machine such as the machine disclosed in U.S. Patent No. 5,816,990 and delivers the bag to the loading horn 110. This vacuum head bag transportation device can be one such as the one disclosed in U.S. Patent No. 5,618,252.
14- From the foregoing description, it will be apparent that the loading machine of the present invention has a number of advantages, some of which have been described above and others of which are inherent in the machine 10 of the present invention. Also, it will be understood that modifications can be made to the loading machine of the present invention without departing from the teachings of the invention.

Claims (4)

1. An apparatus for loading an object into a bag including: a frame; a loading fork movably mounted to said frame; a loading horn for holding a bag, said loading horn and said loading fork being movable relative to each other.
2. The apparatus of claim 1 further comprising a controller coupled to said loading fork for controlling the timing and movement of said loading fork.
3. A system for loading an object into a bag including: an infeed conveyor; a loading apparatus located downstream of said infeed conveyor, said loading apparatus including, a frame and a loading fork movably mounted to said frame; and a take-away conveyor located downstream of said loading apparatus, wherein said loading fork moves in a first direction along said frame from a position adjacent said infeed conveyor where said loading fork can receive the object, to a second position adjacent said take-away conveyor where said loading fork can transfer the object to said take-away conveyor, wherein the object is loaded into a bag between said first position and said second position, and after the object is transferred to said take- away conveyor said loading fork moves along said frame in a second direction opposite said first direction back to said first position. -16-
4. The system of claim 3 wherein said loading apparatus further includes a loading horn for holding a bag, said loading horn being positioned such that said fork may be passed through said loading horn. The system of claim 3 wherein the timing and movement of said fork along said frame is controlled by a controller. Dated this 10 t h Day of December 2001 MACHINERY DEVELOPMENTS LTD Attorney: JOHN D. FORSTER Fellow Institute of Patent and Trade Mark Attorneys of Australia of BALDWIN SHELSTON WATERS
AU2001100627A 2001-03-26 2001-12-10 Apparatus for loading objects into bags Ceased AU2001100627B4 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NZ51077001 2001-03-26

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AU2001100627B4 true AU2001100627B4 (en) 2002-01-10

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US (1) US20040128954A1 (en)
EP (1) EP1425221A4 (en)
AR (1) AR033201A1 (en)
AU (1) AU2001100627B4 (en)
NZ (1) NZ529064A (en)
PE (1) PE20020936A1 (en)
WO (1) WO2002076832A1 (en)

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WO2002076832A1 (en) 2002-10-03
NZ529064A (en) 2005-04-29
AU2001100627A4 (en) 2002-01-10
EP1425221A1 (en) 2004-06-09
AR033201A1 (en) 2003-12-10
US20040128954A1 (en) 2004-07-08
PE20020936A1 (en) 2002-10-31
EP1425221A4 (en) 2006-09-20

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