DK150738B - STABLE CONTAINER MANUFACTURED BY FILLING A CUTTING SUBJECT - Google Patents
STABLE CONTAINER MANUFACTURED BY FILLING A CUTTING SUBJECT Download PDFInfo
- Publication number
- DK150738B DK150738B DK486880AA DK486880A DK150738B DK 150738 B DK150738 B DK 150738B DK 486880A A DK486880A A DK 486880AA DK 486880 A DK486880 A DK 486880A DK 150738 B DK150738 B DK 150738B
- Authority
- DK
- Denmark
- Prior art keywords
- container
- folding
- folded
- line
- fold
- Prior art date
Links
Classifications
-
- 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
- B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
- B65D5/20—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper by folding-up portions connected to a central panel from all sides to form a container body, e.g. of tray-like form
- B65D5/24—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper by folding-up portions connected to a central panel from all sides to form a container body, e.g. of tray-like form with adjacent sides interconnected by gusset folds
- B65D5/244—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper by folding-up portions connected to a central panel from all sides to form a container body, e.g. of tray-like form with adjacent sides interconnected by gusset folds and the gussets folds connected to the outside of the container body
- B65D5/245—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper by folding-up portions connected to a central panel from all sides to form a container body, e.g. of tray-like form with adjacent sides interconnected by gusset folds and the gussets folds connected to the outside of the container body the gussets folds comprising more than two gusset panels
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cartons (AREA)
- Stackable Containers (AREA)
- Containers Having Bodies Formed In One Piece (AREA)
- Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
- Table Devices Or Equipment (AREA)
- Thermally Insulated Containers For Foods (AREA)
- Making Paper Articles (AREA)
- Secondary Cells (AREA)
- Packages (AREA)
- Rigid Containers With Two Or More Constituent Elements (AREA)
- Sampling And Sample Adjustment (AREA)
- Details Of Rigid Or Semi-Rigid Containers (AREA)
- Tubes (AREA)
Abstract
Description
i 180738in 180738
Opfindelsen angår en stablelig beholder fremstillet ved foldning af et tilskåret emne og omfattende en firkantet bund, der på alle sider er omgivet af en sidevæg, der udvider sig konisk opad, og som består af firkantede væg-5 felter, der i hjørneområderne er forbundet med trekante de foldedele, der udgår fra bundens hjørner og er foldet henholdsvis hen over hinanden og over vægfelterne.BACKGROUND OF THE INVENTION The invention relates to a stackable container made by folding a cut blank and comprising a square bottom surrounded on all sides by a side wall which extends tapered upwards and consisting of square wall panels connected in the corner areas to triangle the folding parts that start from the bottom corners and are folded over each other and over the wall panels respectively.
Beholdere af denne art har som regel tre trekantede foldedele ved hvert hjørne. Ved hjælp af tre sådanne folde-10 dele kan der imidlertid ikke opnås en stor stabilitet, og de kendte beholdere har derfor som regel f.eks. en randforstærkning f.eks. i form af en falset rand. I DE-OS 18 10 600 og US-PS 3 536 248 nævnes det ganske vist som en mulighed at undlade en så-15 dan falset rand, men der vises og omtales kun udførligt udførelseseksempler med falset rand, der selvsagt gør opbygningen og fremstillingen mere kompliceret. Disse kendte beholdere har kun forholdsvis lille størrelse, idet de er indrettet til, at man skal kunne spise di-20 rekte fra dem, og de er åbenbart ikke konstrueret med henblik på, at deres dimensioner skal kunne overstige en forholdsvis ringe størrelse.Containers of this kind usually have three triangular folds at each corner. However, by means of three such folding parts a great stability cannot be obtained, and the known containers usually have e.g. an edge reinforcement e.g. in the form of a folded rim. In DE-OS 18 10 600 and US-PS 3,536,248 it is mentioned as an opportunity to avoid such a folded edge, but only detailed examples with folded edge are shown and mentioned which obviously make the construction and manufacture more complicated. These known containers are of relatively small size, being adapted to eat directly from them, and are obviously not designed to allow their dimensions to exceed a relatively small size.
Det er opfindelsens formål at anvise en beholder af den foran nævnte art, der har en enkel udformning, og som 25 også ved store dimensioneringer har tilstrækkelig sta bilitet til opbevaring af væske og andre flydelige materialer.It is an object of the invention to provide a container of the aforementioned kind which has a simple design and which, even at large dimensions, has sufficient stability for storing liquid and other liquid materials.
Dette er ifølge opfindelsen opnået ved, at der i hvert hjørneområde findes syv foldedele, som er foldet på en 30 sådan måde, at der dannes foldekanter, som støder op mod hinanden, og at de omfoldede foldedele på hvert hjørneområdes henholdsvis inderside og yderside ligger i direkte forlængelse af hinanden.This is achieved according to the invention in that in each corner area there are seven folding parts folded in such a way as to form folding edges which are adjacent to each other and that the folded folding parts on the inner and outer sides of each corner area are respectively in direct extension of each other.
2 1507382 150738
Fordelen ved beholderen ifølge opfindelsen består i, at beholderens stabilitet øges væsentligt. Ganske vist ligger der i hjørneområderne ligesom på de kendte beholdere kun tre materialelag over hinanden, men da hver enkelt 5 foldekant, der strækker sig fra overkanten af hjørneom rådet ned til bunden, bidrager til beholderens stabilitet, bevirker det større antal foldekanter, der på beholderen ifølge opfindelsen er dannet ved foldningen af de syv foldedele, en væsentlig forbedring af stabilite-10 ten. Det har endvidere vist sig, at det større antal fol dedele tillader en vis eftergivelighed af hjørneområderne, uden at den af foldekanterne bevirkede stabilitet forringes i nævneværdig grad, men således at trykpåvirkningen mod hjørneområderne, der f.eks. bevirkes af på 15 beholderen stablede fyldte beholdere, i det omfang dis se påvirkninger ikke optages af hjørneområderne, fordeles på de tilstødende flader. På grund af denne eftergivelighed af hjørneområderne undgås også beskadigelse af disse f.eks. på grund af stødpåvirkninger, idet fold-20 ningerne på grund af eftergiveligheden vil åbne sig en lille smule i området, hvor stødpåvirkningen sker.The advantage of the container according to the invention consists in substantially increasing the stability of the container. Of course, just like the known containers, there are only three layers of material in the corner areas, but as each 5 folding edge extending from the top edge of the corner down to the bottom contributes to the stability of the container, the greater number of folding edges on the container according to the invention formed by the folding of the seven folding parts, a substantial improvement of the stability. Furthermore, it has been found that the greater number of fold parts allow some resilience of the corner areas without significantly impairing the stability of the fold edges, but so that the pressure effect on the corner areas, e.g. are filled with 15 containers stacked on containers, insofar as these impacts are not absorbed by the corner areas, distributed on the adjacent surfaces. Due to this resilience of the corner areas, damage to these, e.g. due to impact, the folds, due to the yield, will open slightly in the area where the impact occurs.
Indvendigt på to steder og udvendigt på ét sted er kanterne af foldedelene foldet mod hinanden således, at foldekanterne på de mod hinanden foldede dele støder tæt op mod hinanden. Flydende materiale i beholderen 25 kan derfor kun meget vanskeligt eller overhovedet ikke trænge ind bag foldningerne, og man undgår derved risiko for, at foldningerne opblødes eller beskadiges på anden måde. Det har vist sig, at beholderen ifølge opfindelsen kan have temmelig store dimensioner, også når 30 den består af papir eller pap. Da papir eller pap er godkendt som beholdermateriale til opbevaring af mange kemikalier, hvortil formstof og metal ikke er tilladt, er der ved opfindelsen tilvejebragt en enkel beholder, der fortrinsvis kan bestå af papir eller pap, og som 35 er anvendelig også til opbevaring af aggressive kemika- 3 150738 lier. Samtidig er beholderen meget stabil og pålidelig, hvilket også er nødvendigt for opbevaring af de nævnte materialer. Beholderen har derhos den fordel, at foldningen kan ske på forholdsvis enkel måde langs rette 5 linier, således at fremstillingen af beholderen kan ske maskinelt.Inside of two places and outside of one place, the edges of the folding members are folded against each other such that the folding edges of the folded parts abut close together. Liquid material in the container 25 can therefore only very difficult or at all not penetrate behind the folds, thereby avoiding the risk of the folds being softened or otherwise damaged. It has been found that the container according to the invention can have rather large dimensions, even when made of paper or cardboard. Since paper or cardboard is approved as a container material for storing many chemicals for which plastic and metal are not allowed, the present invention provides a simple container, which may preferably consist of paper or cardboard, and which is also useful for storing aggressive materials. chemistry- 3 150738 lyre. At the same time, the container is very stable and reliable, which is also necessary for storing the said materials. The container, therefore, has the advantage that the folding can be done in a relatively simple manner along straight lines, so that the container can be made mechanically.
Selv om beholderen fortrinsvis består af papir eller pap, kan den naturligvis også være fremstillet af andre materialer, f.eks. formstof eller metal.Of course, although the container is preferably made of paper or cardboard, it may also be made of other materials, e.g. plastic or metal.
10 Når beholderen består af pap, kan stabiliteten øges be tydeligt ved, at der til fremstillingen anvendes flerlags pap. Beholderen vil kunne foldes efter hærdning af flerlags-pappets lim, men hvis foldningen sker før hærdning af limen, vil der ikke kræves yderligere limning 15 til at holde foldningen stabil, efter at det til fold ningen udøvede tryk henholdsvis det anvendte værktøj er fjernet. Det har vist sig særlig fordelagtigt af fremstille beholderen af femlags-pap, og et særligt gunstigt materiale er skandinavisk kraftpapir eller natronpapir.10 When the container is made of cardboard, the stability can be clearly increased by the use of multilayer cardboard for the manufacture. The container may be folded after curing of the multilayer paper glue, but if folding occurs before curing of the glue, no further bonding 15 will be required to keep the folding stable after the pressure exerted on the folding and the tool used, respectively, is removed. It has been found particularly advantageous to produce the five-layer cardboard container, and a particularly favorable material is Scandinavian kraft paper or baking soda paper.
20 Ved disse materialer bør vægten pr. lag andrage ca. 300 g/m og tykkelsen bør andrage ca. 0,5 mm for at opnå en til det ønskede formål særlig godt egnet beholder. Lagene kan være sammenklæbet med polyvinylalkohollim eller smeltelim. Disse materialer har vist sig særligt veleg-25 nede, men selvsagt vil der også kunne anvendes anden eg net lim.20 For these materials, the weight per layers amount approx. 300 g / m and the thickness should be approx. 0.5 mm to obtain a particularly suitable container for the desired purpose. The layers may be adhered with polyvinyl alcohol adhesive or hot melt adhesive. These materials have proved particularly suitable, but of course other oak mesh adhesives may also be used.
Fordelene ved beholderen ifølge opfindelsen kan udnyttes fuldt, når dens rumfang andrager mindst 56 liter. Med et rumfang på 56 liter udnyttes på den ene side fordele-30 ne fuldt ud, og dette rumfang passer på den anden side til normerne for emballeringer. Beholderen kan også med fordel have større rumfang, hvilket naturligvis ikke betyder, at den ikke med fordel kan fremstilles med mindre rumfang.The advantages of the container according to the invention can be fully utilized when its volume is at least 56 liters. With a volume of 56 liters, on the one hand, the benefits are fully utilized, and this volume on the other hand fits the standards for packaging. The container may also advantageously have larger volumes, which of course does not mean that it cannot advantageously be made with smaller volumes.
4 1507384 150738
Opfindelsen forklares nærmere under henvisning til den på tegningen som et eksempel viste udførelsesform for en beholder ifølge opfindelsen, fig. 1 viser i perspektiv en beholder ifølge opfindelsen, 5 fig. 2 viser et med indtegnede foldelinier forsynet emne af karton til fremstilling af beholderen, fig. 3 er et snit langs det i fig. 1 med III viste plan, og fig. 4 er et snit langs det i fig. 1 med IV viste plan.The invention is further explained with reference to the exemplary embodiment of a container according to the invention shown in the drawing. 1 is a perspective view of a container according to the invention; FIG. Figure 2 shows a carton blanked item for making the container; 3 is a sectional view taken along the line shown in FIG. 1 with plan III, and FIG. 4 is a sectional view taken along the line shown in FIG. 1 with plan IV.
10 Den viste beholder 1 består af en bund 2 og fire vægfel ter 3-6. Fra bundens 2 hjørner 7 udgår foldedele 8-14, der har form som spidse trekanter med den brede ende liggende ved vægfelternes øvre rand.10 The container 1 shown consists of a base 2 and four wall panels 3-6. From the corners 2 of the bottom 2, folding portions 8-14 are formed which are shaped like pointed triangles with the wide end lying at the upper edge of the wall panels.
Foldedelene 8-14 fremgår nærmere af fig. 2, der viser 15 et emne med indtegnede linier 15-28, hvoraf foldelinier er vist fuldt optrukne, medens de linier, på hvilke foldekanterne kommer til at ligge efter foldningen, er vist med stiplede linier. I oprettet stilling er vægfeltet 3 foldet knapt 90° omkring foldelinien 15 fra tegningens 20 plan opad mod iagttageren. Det samme gælder for vægfel terne 4, 5 og 6. Foldningen af foldedelene 8-14 sker som følger:The folding parts 8-14 are shown in more detail in FIG. 2, showing a blank with drawn lines 15-28, of which fold lines are shown fully drawn, while the lines on which the fold edges lie after the fold are shown in dotted lines. In the upright position, the wall panel 3 is folded barely 90 ° around the fold line 15 from the plane of the drawing 20 upwards towards the observer. The same applies to the wall panels 4, 5 and 6. The folding of the fold parts 8-14 takes place as follows:
Foldedelen 8 foldes således bagud omkring foldelinien 17, at dens foldekant 18 kommer til at ligge bag linien 25 16. Derpå foldes foldedelen 9 igen fremad omkring fol dekanten 18, således at dens linie 19 kommer til at ligge under foldekanten 17. Foldedelen 10 foldes derpå fremad omkring foldekanten 20, indtil dens kant 21 kommer til at ligge på foldedelen 9's linie 19. Derefter 5 150738 bliver foldedelen 11 foldet omkring kanten 21 i den anden retning, således at dens linie 22 kommer til at ligge over foldelinien 2D. Foldedelen 12 bliver derpå foldet bagud omkring foldekanten 23, således at dens fol de-5 linie 24 ligeledes kommer til at ligge bag foldedelen ll's linie 22, umiddelbart ved siden af foldekanten 20.The folding portion 8 is folded backwardly around the folding line 17 so that its folding edge 18 will lie behind the line 25 16. Then the folding portion 9 is folded forward again around the folding edge 18, so that its line 19 will lie below the folding edge 17. The folding portion 10 is then folded forwardly about the folding edge 20 until its edge 21 will lie on the line 19 of the folding portion 9. Then, the folding portion 11 is folded around the edge 21 in the other direction, so that its line 22 will lie above the folding line 2D. The folding portion 12 is then folded backward around the folding edge 23 so that its folding line 24 will also lie behind the folding line 11 of the folding portion 11, immediately adjacent to the folding edge 20.
Derpå foldes foldedelen 13 igen fremad omkring kanten 24. således at dens linie 25 ligger bag foldelinien 23. Foldedelen 14 foldes nu fremad omkring foldelinien 26, 10 således at dens kant 27 kommer til at ligge på linien 25. Endelig foldes vægfeltet 6 således omkring linien 27, at linien 28 kommer til at ligge over foldelinien 26.Then the folding part 13 is folded forward again around the edge 24. so that its line 25 lies behind the folding line 23. The folding part 14 is now folded forward around the folding line 26, 10 so that its edge 27 will lie on the line 25. Finally, the wall panel 6 is folded around the line. 27, that line 28 will be above fold line 26.
Resultatet af foldningen er vist i snit i fig. 3. Der 15 er herved anvendt et firelags materiale. Som allerede nævnt har et femlags materiale vist sig særligt fordelagtigt, men der kan anvendes materialer med flere eller færre antal lag. I foldningens område ligger tre lag af flerlagsmateriale over hinanden. Som vist ved 29, 30 20 henholdsvis 31 støder efter foldningen på indersiden af hvert hjørneområde henholdsvis på ydersiden af dette beliggende foldekanter op mod hinanden, og på grund af meget stærk sammenpresning af foldningerne hindres, at materiale i beholderen kan trænge ind i foldningerne.The result of the folding is shown in section in FIG. 3. A four-layer material is used for this. As already mentioned, a five-layer material has proved particularly advantageous, but materials with more or less number of layers can be used. In the area of the folding, three layers of multilayer material lie above each other. As shown at 29, 30 20 and 31, respectively, after folding on the inside of each corner area or on the outside of this folding edges, respectively, abut one another, and due to very strong compression of the folds, material in the container is prevented from entering the folds.
25 Ifølge fig. 4 er der på beholderens øvre rand fastgjort et metalbånd 32, der er bukket i U-form omkring randen.25 According to FIG. 4, on the upper edge of the container is attached a metal band 32 which is bent in a U-shape around the rim.
I metalbåndet og i beholdervæggen er udformet en rende-formet indpresning 33, der strækker sig parallelt med randen kontinuerligt omkring denne, og som indvendigt 30 i beholderen danner anlægsflade for et dæksel eller låg 34, der ved randen er udstyret med en tætning 35, der som vist med 36 er fastlimet på låget. Yderligere er en klemring 37 anbragt omkring hele beholderens rand, der griber ind i indpresningen 33 og griber omkring låget 150738 6 til effektiv fastholdelse af dette. Der opnås derved et tæt lukke, der hindrer udsivning af beholderens indhold. Endvidere kan et sådant lukke forsegles til fortoldning eller til andre formål.In the metal strip and in the container wall is formed a gutter-shaped indentation 33 extending parallel to the rim continuously around it, and which internally 30 in the container forms the abutment surface for a cover or lid 34 provided at the rim with a seal 35 which as shown with 36 is fixed to the lid. Further, a clamping ring 37 is disposed around the entire rim of the container which engages in the indentation 33 and engages around the lid 150 for effective retention thereof. Thereby, a tight closure is obtained which prevents leakage of the contents of the container. Furthermore, such a closure can be sealed for customs clearance or for other purposes.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2946057 | 1979-11-15 | ||
| DE19792946057 DE2946057A1 (en) | 1979-11-15 | 1979-11-15 | STACKABLE CONTAINER FOLDED FROM A CUT |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DK486880A DK486880A (en) | 1981-05-16 |
| DK150738B true DK150738B (en) | 1987-06-09 |
| DK150738C DK150738C (en) | 1988-03-28 |
Family
ID=6086009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK486880A DK150738C (en) | 1979-11-15 | 1980-11-14 | STABLE CONTAINER MANUFACTURED BY FILLING A CUTTING SUBJECT |
Country Status (16)
| Country | Link |
|---|---|
| EP (1) | EP0029142B1 (en) |
| JP (1) | JPS5684250A (en) |
| AT (1) | ATE3396T1 (en) |
| AU (1) | AU536022B2 (en) |
| BR (1) | BR8007453A (en) |
| CA (1) | CA1139688A (en) |
| CS (1) | CS225113B2 (en) |
| DD (1) | DD160406A5 (en) |
| DE (1) | DE2946057A1 (en) |
| DK (1) | DK150738C (en) |
| ES (1) | ES254433Y (en) |
| MX (1) | MX150878A (en) |
| NO (1) | NO151816C (en) |
| PL (1) | PL127335B1 (en) |
| SU (1) | SU1145919A3 (en) |
| YU (1) | YU42991B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6090130A (en) * | 1983-10-17 | 1985-05-21 | マルハ株式会社 | Can-shaped vessel |
| JPS6090131A (en) * | 1983-10-18 | 1985-05-21 | マルハ株式会社 | Can-shaped vessel |
| JPS61203335A (en) * | 1985-02-25 | 1986-09-09 | マルハ株式会社 | Vessel |
| GB2306945A (en) * | 1995-11-10 | 1997-05-14 | Benson Box Ltd | Container or tray |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3038634A (en) * | 1957-01-25 | 1962-06-12 | Reynolds Metals Co | Flanged container having controlled corner folds |
| US3423007A (en) * | 1965-10-04 | 1969-01-21 | Od W Christensson | Package |
| SE337553B (en) * | 1970-07-06 | 1971-08-09 | Mo Och Domsjoe Ab |
-
1979
- 1979-11-15 DE DE19792946057 patent/DE2946057A1/en active Granted
-
1980
- 1980-10-30 AT AT80106658T patent/ATE3396T1/en active
- 1980-10-30 EP EP80106658A patent/EP0029142B1/en not_active Expired
- 1980-11-10 CA CA000364384A patent/CA1139688A/en not_active Expired
- 1980-11-13 SU SU803003804A patent/SU1145919A3/en active
- 1980-11-13 AU AU64334/80A patent/AU536022B2/en not_active Ceased
- 1980-11-13 MX MX184741A patent/MX150878A/en unknown
- 1980-11-13 DD DD80225160A patent/DD160406A5/en unknown
- 1980-11-14 ES ES1980254433U patent/ES254433Y/en not_active Expired
- 1980-11-14 NO NO803443A patent/NO151816C/en unknown
- 1980-11-14 BR BR8007453A patent/BR8007453A/en unknown
- 1980-11-14 JP JP16130780A patent/JPS5684250A/en active Granted
- 1980-11-14 DK DK486880A patent/DK150738C/en not_active IP Right Cessation
- 1980-11-14 YU YU2909/80A patent/YU42991B/en unknown
- 1980-11-14 PL PL1980227838A patent/PL127335B1/en unknown
- 1980-11-14 CS CS807744A patent/CS225113B2/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DK150738C (en) | 1988-03-28 |
| DE2946057A1 (en) | 1981-05-21 |
| YU42991B (en) | 1989-02-28 |
| PL127335B1 (en) | 1983-10-31 |
| AU536022B2 (en) | 1984-04-12 |
| NO151816B (en) | 1985-03-04 |
| DD160406A5 (en) | 1983-07-27 |
| ES254433Y (en) | 1981-10-01 |
| JPS5684250A (en) | 1981-07-09 |
| EP0029142A1 (en) | 1981-05-27 |
| ES254433U (en) | 1981-03-16 |
| CA1139688A (en) | 1983-01-18 |
| CS225113B2 (en) | 1984-02-13 |
| SU1145919A3 (en) | 1985-03-15 |
| NO803443L (en) | 1981-08-03 |
| YU290980A (en) | 1983-09-30 |
| ATE3396T1 (en) | 1983-06-15 |
| PL227838A1 (en) | 1981-08-07 |
| MX150878A (en) | 1984-08-08 |
| EP0029142B1 (en) | 1983-05-18 |
| AU6433480A (en) | 1981-05-21 |
| DE2946057C2 (en) | 1989-04-13 |
| DK486880A (en) | 1981-05-16 |
| JPS6340742B2 (en) | 1988-08-12 |
| BR8007453A (en) | 1981-05-26 |
| NO151816C (en) | 1985-06-12 |
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| Date | Code | Title | Description |
|---|---|---|---|
| PBP | Patent lapsed |