WO1991008973A1 - Container for fan-folded sheets - Google Patents
Container for fan-folded sheets Download PDFInfo
- Publication number
- WO1991008973A1 WO1991008973A1 PCT/US1990/007096 US9007096W WO9108973A1 WO 1991008973 A1 WO1991008973 A1 WO 1991008973A1 US 9007096 W US9007096 W US 9007096W WO 9108973 A1 WO9108973 A1 WO 9108973A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- sheets
- container
- chamber
- elongated
- sheet
- Prior art date
Links
- 230000000717 retained effect Effects 0.000 claims abstract description 10
- 239000004033 plastic Substances 0.000 claims description 13
- 229920003023 plastic Polymers 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 230000000712 assembly Effects 0.000 abstract description 34
- 238000000429 assembly Methods 0.000 abstract description 34
- 239000002985 plastic film Substances 0.000 abstract description 3
- 239000000523 sample Substances 0.000 description 31
- 238000000034 method Methods 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 2
- -1 e.g. Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H35/00—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers
- B65H35/10—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers from or with devices for breaking partially-cut or perforated webs, e.g. bursters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D83/00—Containers or packages with special means for dispensing contents
- B65D83/08—Containers or packages with special means for dispensing contents for dispensing thin flat articles in succession
- B65D83/0847—Containers or packages with special means for dispensing contents for dispensing thin flat articles in succession through an aperture at the junction of two walls
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/10—Handled articles or webs
- B65H2701/11—Dimensional aspect of article or web
- B65H2701/112—Section geometry
- B65H2701/1123—Folded article or web
- B65H2701/11231—Fan-folded material or zig-zag or leporello
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T225/00—Severing by tearing or breaking
- Y10T225/20—Severing by manually forcing against fixed edge
- Y10T225/205—With feed-out of predetermined length from work supply
- Y10T225/21—Merely to provide lead-end for manual grasping
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T225/00—Severing by tearing or breaking
- Y10T225/20—Severing by manually forcing against fixed edge
- Y10T225/23—Zigzag-folded supply package
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T225/00—Severing by tearing or breaking
- Y10T225/20—Severing by manually forcing against fixed edge
- Y10T225/238—With housing for work supply
- Y10T225/254—With finger-access opening to facilitate work feed-out
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T225/00—Severing by tearing or breaking
- Y10T225/20—Severing by manually forcing against fixed edge
- Y10T225/238—With housing for work supply
- Y10T225/255—With internal guide
Definitions
- This invention related generally to containers for holding small flexible sheets and, more particularly, to containers that allow the sheets to be dispensed, one at a time, from a fan-folded stack.
- Containers of this kind are particularly useful in the dispensing of hygienic plastic sheet assemblies for use in covering the elongated probe of a clinical thermometer.
- An example of such a protective cover assembly is shown and described in a copending and commonly-assigned U.S. patent application. Serial No. 265,525, entitled "Disposable Probe Cover Assembly for Medical Thermometer.”
- the probe cover assemblies disclosed in that patent application each have three layers, including a plastic base layer with a central aperture, a stretchable plastic film- spanning the aperture, and a protective paper layer.
- the three layers are laminated together to form a flat assembly having at least limited flexibility and having a generally square shape, with well-rounded corners, about 3/4 to 1 inch across.
- the probe cover assemblies are connected together to form an elongated chain, and the individual covers are folded together in alternating directions to form a fan-folded stack.
- the container should be configured so as to minimize the possibility of the fan-folded stack becoming jammed within it and so that the individual sheets can be effectively dispensed regardless of the number of sheets remaining within the apparatus.
- the container also should be configured such that the individual sheets being dispensed do not inadvertently retract back into the container.
- the container should be inexpensive to manufacture, yet be sufficiently strong to withstand normal handling without damaging its fragile contents. The present invention fulfills these needs.
- the present invention is embodied in a container for hygienically carrying flat flexible sheets such as plastic probe cover assemblies and for allowing the sheets to be dispensed, one at a time, from a uniform fan-folded stack, with minimal risk that the stack will become jammed.
- the container includes an elongated storage chamber with a cross-sectional shape that corresponds generally with the shape of the individual sheets to be dispensed and a cross-sectional size the permits the stack of fan-folded sheets to slide along the chamber's longitudinal axis.
- An exit slot defined at one end of the elongated chamber is sized to allow the connected sheets to be dispensed end-wise therethrough, one at a time.
- the container further includes retainer means spaced rearwardly of the slot for defining a constriction in the elongated chamber having a size slightly smaller than the sheets, so as to retain the stack of fan-folded sheets behind it.
- the sheets can then be individually dispensed by pulling the end-most sheet through the slot, which flexes a trailing sheet past the constriction, with the remaining sheets being retained by the constriction.
- the container is simple and inexpensive to construct, yet completely reliable in effectively dispensing the individual sheets.
- the elongated storage chamber is defined by four walls and the chamber has a generally square transverse cross-section, with well-rounded corners.
- the constriction is defined by ridges projecting inwardly from two opposing side walls, the ridges lying in a common plane, substantially perpendicular to the chamber's longitudinal axis.
- One of the four walls curves smoothly from the constriction to the exit slot.
- pulling the end-most sheet through the slot in turn pulls a trailing sheet in the fan-folded stack past the constriction.
- the inwardly-projecting ridges in the side walls frictionally grip the sheet's side edges as the sheet slides past, to stabilize the sheet and prevent jamming. Eventually, the trailing edge of the sheet is pulled past the constriction and the process repeated with the next succeeding sheet.
- the exit slot is defined by a channel formed by two spaced-apart, confronting walls (i.e., the chamber's top wall and bottom wall) , one of the walls including a shallow recess having a rearward edge with a peripheral size and shape conforming with the rearward edge of the sheets being guided through the channel.
- the channel is configured such that a sheet being guided through it is urged into the shallow recess where its rearward edge abuts against the recess 1 rearward edge and thereby is inhibited from moving rearwardly toward the container.
- the shallow recess has a progressively shallower depth with increasing distance from its rearward edge, such that the recess effectively is a ramp.
- the sheet's rearward edge is urged downwardly into abutment with the shallow recess• rearward edge by two upward projections near the recess' front end.
- the container is defined by two sections, each section being in the form of an elongated trough encircled by a rim, with a flange projecting outwardly from the rim.
- the two sections are attached to each other with their flanges in abutment.
- the two sections preferably are formed from a single sheet of plastic material and are initially pivotally connected together, at the end of the container opposite the slot.
- FIG. 1 is a front perspective view of a probe cover container embodying the invention, with individual plastic probe cover assemblies being dispensed, one at a time, through a slot in the container's forward end.
- FIG. 2 is a top plan view of the container of FIG. 1, shown without the probe cover assemblies.
- FIG. 3 is a side sectional view of the container, taken in the direction of the arrows 3-3 in FIG. 2.
- FIG. 4 is a front elevational view of the container of FIG. 1.
- FIG. 5 is a sectional view of the container, taken in the direction of the arrows 5-5 in FIG. 2, with a probe cover assembly being shown retained behind ridges formed in the container's side walls.
- FIGS. 6(a)-6(g) are schematic views showing the sequential movement of the fan-folded stack of probe cover assemblies as two individual assemblies are successively dispensed.
- FIG. 7 is a plan view of several attached probe cover assemblies of the kind that can be arranged in a fan-folded stack and dispensed individually from the container of FIG. 1.
- FIGS. 1-5 there is shown a container for hygienically carrying a fan-folded stack of thin plastic probe cover assemblies 11 and for allowing the assemblies to be dispensed, one at a time.
- Each probe cover assembly
- FIG. 7 includes three thin, laminated sheets having a generally square shape, with well-rounded corners, and a transverse dimension of about 3/4-to-l inch.
- the assemblies are connected together end-to-end by narrow strips 13 to form an elongated chain and are folded back on each other in an alternating fashion to produce a fan- folded stack adapted to be placed within the container.
- the probe cover assemblies can be selectively removed from the stack and individually dispensed.
- the container includes a lower section 15 and an upper section 17 that are secured together to define an elongated chamber having a generally square cross-section with well-rounded corners for carrying the stack of fan- folded probe cover assemblies 11.
- a rear portion of the chamber has a generally square cross-section with rounded corners sized to be slightly greater in size than the stack of probe cover assemblies, to allow the stack to slide axially within it.
- An opposite, forward portion of the chamber has a uniform width, but progressively smaller height that terminates in a narrow exit slot 23 located at the container's forward end. The slot is sized to allow the probe cover assemblies to be individually dispensed end-wise therethrough.
- the lower section 15 of the container is shaped like a trough, with a substantially uniform depth along its entire length.
- the section includes a bottom wall 25 and two opposed side walls 27 and 29.
- the rearward end of the lower section includes a rear wall 31, but the forward end is open.
- a flange 33 projects outwardly from the coplanar upper edges of the two side walls 27 and 29 and the rear wall 31.
- the upper section 17 of the container includes a top wall 35, two side walls 37 and 39, and a rear wall 41, which cooperate to define a downwardly-concave portion at the section's rear and a downwardly-convex portion at the section's front.
- the top wall curves smoothly from a generally flat segment at the chamber's rear portion to a generally flat segment at the narrow exit slot 23.
- a flange 43 projects outwardly from coplanar edges of the side walls 37 and 39 and rear wall 41. This flange mates with the flange 33 of the lower section 15, to allow the two sections to be conveniently secured to each other.
- a reliable dispensing of individual probe cover assemblies 11 without jamming in the region of the narrow exit slot 23 is ensured by providing a constriction in the container's chamber 19 in the region where the top wall 35 begins to curve downwardly and the chamber's cross-sectional size begins to diminish.
- inwardly-projecting, coplanar ridges 45a and 45b are located in the respective side walls 37 and 39 of the upper section 17. As best shown in FIG. 5, these ridges cooperate to define an opening that is slightly narrower than the individual probe cover assemblies 11. The stack of assemblies is thereby retained behind the ridges.
- the probe cover assemblies 11 are dispensed through the exit slot 23 by pulling the end- most assembly outwardly. This drags the trailing assemblies behind it, including the particular assembly located at the constriction defined by the ridges 45a and 45b.
- pulling on the end-most assembly causes the assembly located immediately behind the ridges to flex such that its two side edges are pulled past the ridges.
- the ridges frictionally grip the flexed assembly as it is pulled past them, to stabilize the assembly within the container and thereby prevent the assembly from becoming jammed.
- the trailing edge of that assembly remains retained behind the ridges while the assembly pivots forwardly about that trailing edge.
- the trailing edge itself, is pulled past its ridges and the process is then repeated with the next succeeding assembly.
- the top wall initially curves downwardly with a curvature centered at a point generally aligned with the ridges.
- a uniform series of shallow ridges 47 is formed in the bottom wall 25 of the lower section 15, extending along substantially the entire length of the lower section, and a corresponding uniform series of shallow ridges 48 is formed in the top wall 35 of the upper section 17, extending only along the space behind the constricting ridges 45a and 45b.
- the shallow ridges 48 located in the portion of the bottom wall forward of the constricting ridges function to prevent an exposed stretchable plastic film in the assemblies from sticking to the bottom wall.
- the shallow ridges 48 also function to longitudinally stiffen the lower section.
- the forward end of the lower section's bottom wall 25 includes a shallow recess 49 having a shape corresponding generally with that of an individual probe cover assembly 11.
- the recess ramps upwardly toward the exit slot 23 at the end of the bottom wall, and a shallow vertical face 50 is thereby defined at the recess' rear periphery.
- the height of the vertical face is made to be slightly greater than the probe cover assembly's thickness, to ensure that the recess' natural radius beneath it does not push the trailing edge of any probe cover assembly located in this recess up and out of the recess. The assembly therefore will abut against this vertical face and be inhibited from being inadvertently moved rearwardly toward the container's chamber.
- the top wall 35 of the container's upper section 17 includes a cutout 53 at its forward end, overlying the shallow recess 49 of the lower section 15.
- This cutout exposes a mid-portion of the upper surface of any probe cover assembly 11 located in the recess, allowing a U-shaped pawl (not shown) to engage the assembly's rearward edge, on opposite sides of the strip 13, and to urge it outwardly through the exit slot 23.
- the pawl retracts to a position where it can engage the rear periphery of the next succeeding assembly.
- a small rearward extension 55 of the shallow recess 49 allows the pawl to drop into a position where it can engage that next assembly's rear periphery.
- the dispenser's lower section 15 and upper section 17 are hinged together at the container's rear end by an integral hinge 57 and are formed from a single sheet of plastic material, e.g., polyvinyl chloride, preferably having a thickness of about .010-.020 inches.
- the sheet can be formed into the specified shape using any of a number of conventional plastic forming techniques.
- the plastic material is preferably transparent, so that the number of stored probe cover assemblies 11 remaining to be dispensed can readily be determined.
- the rear wall 31 and side walls 27 and 29 of the lower section 15 and rear wall 41 and side walls 37 and 39 of the upper section 17 are all formed with a draft of about 5 degrees. This facilitates a convenient removal of the sections from a standard molding apparatus.
- the constricting ridges 45a and 45b of the lower section do not include such a draft, such that their peaks are substantially parallel with each other.
- the present invention provides a container for carrying a fan-folded stack of plastic probe cover assemblies and for allowing the assemblies to be dispensed, one at a time, with minimal risk that the stack will become jammed.
- the stack of assemblies is retained behind a constriction within an elongated chamber having a corresponding shape and slightly larger size. Pulling the forward-most assembly through a narrow channel and exit slot at the container's forward end flexes a trailing assembly past the constriction, while the remaining assemblies remain retained behind the constriction.
- a shallow recess in a wall defining the narrow channel at the container's forward end conformingly receives a probe cover assembly in position to be dispensed, with the recess' rear periphery inhibiting the assembly from being moved inadvertently back into the chamber.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Packages (AREA)
- Details Of Rigid Or Semi-Rigid Containers (AREA)
- Pile Receivers (AREA)
- Control And Other Processes For Unpacking Of Materials (AREA)
- Walking Sticks, Umbrellas, And Fans (AREA)
- Cartons (AREA)
- Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
- Making Paper Articles (AREA)
- Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP19910901380 EP0505454B1 (en) | 1989-12-12 | 1990-12-04 | Container for fan-folded sheets |
DE69027445T DE69027445T2 (en) | 1989-12-12 | 1990-12-04 | CONTAINER FOR FOLDED SHEETS |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US449,549 | 1989-12-12 | ||
US07/449,549 US5056682A (en) | 1989-12-12 | 1989-12-12 | Container for fan-folded sheets |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1991008973A1 true WO1991008973A1 (en) | 1991-06-27 |
Family
ID=23784580
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US1990/007096 WO1991008973A1 (en) | 1989-12-12 | 1990-12-04 | Container for fan-folded sheets |
Country Status (8)
Country | Link |
---|---|
US (1) | US5056682A (en) |
EP (1) | EP0505454B1 (en) |
JP (1) | JP2550453B2 (en) |
AT (1) | ATE139205T1 (en) |
AU (1) | AU638906B2 (en) |
CA (1) | CA2069627C (en) |
DE (1) | DE69027445T2 (en) |
WO (1) | WO1991008973A1 (en) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6030117A (en) | 1996-11-12 | 2000-02-29 | Trutek, Inc. | Tympanic thermometer probe cover |
US5833367A (en) | 1996-11-12 | 1998-11-10 | Trutek, Inc. | Tympanic thermometer probe cover |
AU7807898A (en) | 1997-06-03 | 1998-12-21 | Trutek, Inc. | Tympanic thermometer with modular sensing probe |
US6235369B1 (en) * | 1997-09-03 | 2001-05-22 | Velcro Industries B.V. | Strip-form fastening and dispensing |
US5967992A (en) | 1998-06-03 | 1999-10-19 | Trutex, Inc. | Radiometric temperature measurement based on empirical measurements and linear functions |
US6123454A (en) | 1999-06-11 | 2000-09-26 | Trutek, Inc. | Tympanic thermometer disposable probe cover with further stretching prevention structure |
US7063234B2 (en) * | 2000-12-29 | 2006-06-20 | Csp Technologies, Inc. | Meter strip dispenser assembly |
US7582262B2 (en) | 2004-06-18 | 2009-09-01 | Roche Diagnostics Operations, Inc. | Dispenser for flattened articles |
CN101973419B (en) * | 2010-05-20 | 2012-05-23 | 热映光电股份有限公司 | Earmuff supplement box of earmuff distribution device |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3674176A (en) * | 1971-03-04 | 1972-07-04 | Bio Medical Sciences Inc | Device for holding and dispensing thermometers |
US4032004A (en) * | 1975-07-09 | 1977-06-28 | Francis William Coates | Ticket dispensing arrangement |
US4700835A (en) * | 1986-05-23 | 1987-10-20 | Rognsvoog Jr Albert J | One-piece thermoformed dispensing packaging |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2587928A (en) * | 1949-11-22 | 1952-03-04 | Raymond G Tuck | Continuous strip dispenser |
US3115989A (en) * | 1961-09-18 | 1963-12-31 | Ivers Lee Co | Pilfer-proof dispensing carton for package strips |
FR1326532A (en) * | 1962-03-29 | 1963-05-10 | Charles Nicolle Ets | Razor blade dispenser packaging |
US3858722A (en) * | 1969-05-21 | 1975-01-07 | Singer Co | Needle dispenser |
-
1989
- 1989-12-12 US US07/449,549 patent/US5056682A/en not_active Expired - Lifetime
-
1990
- 1990-12-04 DE DE69027445T patent/DE69027445T2/en not_active Expired - Fee Related
- 1990-12-04 AT AT91901380T patent/ATE139205T1/en not_active IP Right Cessation
- 1990-12-04 AU AU70388/91A patent/AU638906B2/en not_active Ceased
- 1990-12-04 CA CA 2069627 patent/CA2069627C/en not_active Expired - Fee Related
- 1990-12-04 EP EP19910901380 patent/EP0505454B1/en not_active Expired - Lifetime
- 1990-12-04 JP JP50176591A patent/JP2550453B2/en not_active Expired - Lifetime
- 1990-12-04 WO PCT/US1990/007096 patent/WO1991008973A1/en active IP Right Grant
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3674176A (en) * | 1971-03-04 | 1972-07-04 | Bio Medical Sciences Inc | Device for holding and dispensing thermometers |
US4032004A (en) * | 1975-07-09 | 1977-06-28 | Francis William Coates | Ticket dispensing arrangement |
US4700835A (en) * | 1986-05-23 | 1987-10-20 | Rognsvoog Jr Albert J | One-piece thermoformed dispensing packaging |
Also Published As
Publication number | Publication date |
---|---|
EP0505454A4 (en) | 1993-04-21 |
DE69027445T2 (en) | 1996-10-10 |
AU638906B2 (en) | 1993-07-08 |
AU7038891A (en) | 1991-07-18 |
DE69027445D1 (en) | 1996-07-18 |
CA2069627A1 (en) | 1991-06-13 |
US5056682A (en) | 1991-10-15 |
JP2550453B2 (en) | 1996-11-06 |
CA2069627C (en) | 1996-04-23 |
JPH05504747A (en) | 1993-07-22 |
EP0505454B1 (en) | 1996-06-12 |
EP0505454A1 (en) | 1992-09-30 |
ATE139205T1 (en) | 1996-06-15 |
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