DK144221B - Anlaeg til varmebehandling af navnlig poroese cylindre og roer - Google Patents
Anlaeg til varmebehandling af navnlig poroese cylindre og roer Download PDFInfo
- Publication number
- DK144221B DK144221B DK424176AA DK424176A DK144221B DK 144221 B DK144221 B DK 144221B DK 424176A A DK424176A A DK 424176AA DK 424176 A DK424176 A DK 424176A DK 144221 B DK144221 B DK 144221B
- Authority
- DK
- Denmark
- Prior art keywords
- shells
- pipes
- heat treatment
- cylinders
- poroese
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
- F27B9/20—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path
- F27B9/24—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path being carried by a conveyor
- F27B9/243—Endless-strand conveyor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
- F27B9/145—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving along a serpentine path
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
- F27B9/20—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path
- F27B9/22—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path on rails, e.g. under the action of scrapers or pushers
- F27B9/227—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path on rails, e.g. under the action of scrapers or pushers with rotation of the charge
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
- F27B9/20—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path
- F27B9/24—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path being carried by a conveyor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
- F27B9/20—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path
- F27B9/24—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path being carried by a conveyor
- F27B2009/2492—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path being carried by a conveyor the conveyor being constituted by series of little rams or ratchets, moving the charge along
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D3/12—Travelling or movable supports or containers for the charge
- F27D2003/121—Band, belt or mesh
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27M—INDEXING SCHEME RELATING TO ASPECTS OF THE CHARGES OR FURNACES, KILNS, OVENS OR RETORTS
- F27M2001/00—Composition, conformation or state of the charge
- F27M2001/15—Composition, conformation or state of the charge characterised by the form of the articles
- F27M2001/1504—Ceramic articles
- F27M2001/1526—Elongated articles
- F27M2001/153—Tubes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27M—INDEXING SCHEME RELATING TO ASPECTS OF THE CHARGES OR FURNACES, KILNS, OVENS OR RETORTS
- F27M2001/00—Composition, conformation or state of the charge
- F27M2001/15—Composition, conformation or state of the charge characterised by the form of the articles
- F27M2001/1539—Metallic articles
- F27M2001/1547—Elongated articles, e.g. beams, rails
- F27M2001/1556—Tubes or cylindrical bodies
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Treatment Of Fiber Materials (AREA)
- Drying Of Solid Materials (AREA)
- Heat Treatment Of Articles (AREA)
- Attitude Control For Articles On Conveyors (AREA)
- Pusher Or Impeller Conveyors (AREA)
- Tunnel Furnaces (AREA)
- Food Preservation Except Freezing, Refrigeration, And Drying (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
- Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
- Laminated Bodies (AREA)
- Moulding By Coating Moulds (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
- Reinforced Plastic Materials (AREA)
- Resistance Heating (AREA)
Description
(19) DANMARK (¾
® (12) FREMUEGGELSESSKRIFT nu 144221 B
DIREKTORATET FOR PATENT- OG VAREMÆRKEVÆSENET
(21) Ansøgning nr. ^24l/76 (51) IntCI.3 F 27 D 3/12
(22) Indleveringsdag 21. sep. 1976 F 27 B 9/2A
(24) Løbedag 21. sep. 1976 B 65 G 35/02 (41) Aim. tilgængelig 23. mar. 1977 (44) Fremlagt 18. jan. 1982 (86) International ansøgning nr.
(86) International indleveringsdag (85) Videreførelsesdag -(62) Stamansøgning nr. -
(30) Prioritet 22. sep. 1975* 7528925, FR
(71) Ansøger SAINT-GOBAIN INDUSTRIES, F 92209 Neuilly sur Seine, FR.
(72) Opfinder Aldo Ricci, IT: Nedo Passerini, IT.
(74) Fuldmægtig Internationalt Patent-Bur eau.
(54) Anlæg til varmebehandling af navnlig porøse cylindre og rør.
Opfindelsen angår et anlæg til varmebehandling af navnlig porøse cylindre Qg rør, og omfattende et kammer med dæksel, udformet med aftræk, med fire parvis modstående sidevæage oa med en bund, samt en i den ene sidevæg ved dækslet beliggende indgangsåbning for de rør, der skal behandles, og en i den modstående sidevæg ved bunden beliggende udgangsåbning for de behandlede rør, samt et antal i Q) det indre af kammeret beliggende, indbyrdes parallelle, ubevæaelige T““* CM plader på hvilke rørene successivt bringes til at rulle ved hjælp g| af transportorganer i form af endeløse kæder med medbringere til rt indgreb med hver sit rør.
Det er i og for sig kendt til varmebehandling af diverse genial stande at lade disse genstande passere gennem en ovn, hvor genstan- □ 14422 1 2 dene udfører en translationsbevægelse og, såfremt de er cylinderformede, også ruller om deres længdeakse på et opvarmet underlag, f.eks. en varmeplade.
Til denne dobbelte translations- og rotationsbevægelse er det i og for sig kendt at anvende endeløse kæder med transportmedbringe-re, der skubber genstandene gennem ovnen.
Når en sådan varmebehandling skal foretages på rør af fibermateriale, f.eks. isolerende skaller af fibermateriale imprægneret med bindemiddel, eksempelvis som omhandlet i FR-patentansøgning nr. 74.17232, støder man på særlige vanskeligheder.
I begyndelsen af varmebehandlingen er de harpiksimprægnerede rør meget sårbare. I den indledende fase af varmebehandlingen kan de let deformeres, inden varmebehandlingen bevirker en vis overfladehærdning, specielt fordi transportmedbringerne påvirker rørene mekanisk på et tidspunkt, hvor hærdningen endnu ikke er påbegyndt. Desuden har brugen af en varmeplade, på hvilken rørene ruller om sig selv, den ulempe, at der er en stærkt koncentreret, lokal varmepåvirkning, som ikke er særlig hensigtsmæssig til gennemhærdning af rørene.
Opfindelsen giver anvisning på et anlæg, som muliggør en mere skånsom håndtering af rørene og en mere omfattende gennemhærdning/ behandling af disse rør.
Med henblik herpå er et anlæg ifølge opfindelsen ejendommeligt ved, at pladerne er uopvarmede og perforerede, at de fortrinsvis stavformede medbringere er således indrettede, at afstanden mellem pladerne og det sted, hvor medbringerne har indgreb med rørene, højst er lig med rørenes radius, og at der under bunden findes et antal gasbrændere, der er overdækket af vægelementer, idet bunden mellem vægelementerne er gennembrudt og fortrinsvis overdækket med et gitter.
Ved at anvende medbringere i den her definerede udformning opnår man det resultat, at den skubbekraft, en medbringer udøver på et rør, giver en komposant, der er parallel med den tilhørende plade, dvs. en transportkomposant, og en opadgående komposant, der bidrager til hensigtsmæssig og skånsom rulning af røret på pladen, specielt i den indledende fase af behandlingen. Brugen af uopvarmede, perforerede plader og gasbrændere i bunden af kammeret giver en bedre varmefordeling, der ikke længere er lokaliseret ved undersiden af røret, og da pladerne er perforerede, opnår man også gennem hullerne en hurtigere overfladehærdning med heraf følgende mindre tilsmudsning af 144221 3 pladerne med bindemidlet. Dertil kommer, at det er mekanisk enklere at anvende perforerede plader og separate gasbrændere, fordi det ikke længere er nødvendigt at føre varmefluidum til pladerne eller opvarme dem hver for sig.
Opfindelsen forklares nærmere i det følgende under henvisning til den skematiske tegning, hvor fig, 1 viser kammeret set fra siden og delvis i snit, fig. 2 et detaljebillede af mekanismen til transport og rotation af genstandene i kammeret, fig. 3 i større målestok et længdesnit gennem drivmekanismen i kammeret ifølge fig. 1, og fig. 4 og 5 længdesnit gennem dele af to udførelsesformer for drivmekanismen i kammeret ifølge fig. 1.
Det beskrevne udførelseseksempel viser brugen af anlægget talbehandling af isolationsskaller A af filtmateriale blandet med bindemiddel, specielt skaller af den art, der er omhandlet i ovennævnte patentansøgning. Anlægget er beregnet til gennemførelse af en komplet og ensartet varmebehandling af skallerne til polymerisering eller hærdning af bindemidlet.
Under varmebehandlingen i varmeovnen transporteres skallerne uden påvirkning udefra for at undgå, at yderlagene skiller sig ad, og at der dannes overfladefejl, der kunne skade skallernes udseende.
Under deres ophold i varmeovenen holdes skallerne liggende over hele deres længde,og de bringes til at dreje helt rundt om deres akse med henblik på en ensartet varmebehandling.
Skallerne A føres enkeltvis til en indgangslem 1, som aktiveres af en trykcylinder 2 og standser de enkelte skaller, før de føres ind. Lemmens åbning er tidsstyret og af begrænset varighed for at begrænse varmetabene fra ovnen.
Med henblik på at forlænge skallernes ophold i ovnen og samtidig begrænse ovnens længde, er ovnen udformet med flere etager, nemlig fem etager i det viste udførelseseksempel.
Hver etage er formet af en af én eller flere dele bestående, perforeret plade,over hvilken skallerne A bringes til at rulle, idet de drives frem ved hjælp af stave 4, der udfører en kontinuerlig translationsbevægelse. Til dette formål anvendes der kæder 5, der er forbundetmed stavene. I henhold til opfindelsen er opstillingen af en sådan art, at den øvre gren på en sådan endeløs kæde 5 bevirker en translationsbevægelse i én retning på en etage, medens den nedre gren på samme kæde bevirker en translation i modsat retning 4 144221 på etagen nedenunder.
I det beskrevne udførelseseksempel er der tre kæder 5 med stave 4 til opnåelse af fem etager oven over hinanden. Kæderne drives af en motor-variator gennem en kæde i indgreb med kædehjul 6.
Skallerne A afsættes på de perforerede plader 3 mellem de successive stave 4. Den endeløse kæde 5's bevægelse bevirker, at stavene 4 bevæger sig frem og skubber den foranliggende skal A, som ruller fremad på bærepladen 3. Mellem enden 9 af den pågældende plade 3 og den sidste stav før kædehjulet 6 er der tilvejebragt et mellemrum, gennem hvilket skallerne A kan falde ned til etagen nedenunder. På denne etage kører stavene i modsat retning og med den tilbagekørende gren af kæden. På denne måde vil skallerne igen transporteres horisontalt i retning modsat retningen på den umiddelbart ovenover liggende etage. Til sidst udgår skallerne fra den nederste etage over en skrå plan 10.
Varmeovnen opvarmes ved hjælp af gasbrændere 12 anbragt på gulvet 13 i ovnen. Oven over gasbrænderne er der anbragt vægelementer 14 af rustfrit metal med henblik på undgåelse af lokal overopvarmning på varmeovnens nederste etage. En ensartet fordeling af den opadstigende varme luft i hele ovnens højde sikres ved hjælp af en tynd, perforeret plade 15, der strækker sig parallelt med og i afstand fra oversiden af vægelementerne 14.
Efter bestrygning af samtlige skaller, føres luften ud gennem en skorsten 16.
Det beskrevne og viste eksempel gælder for det tilfælde, hvor pladerne 3, der bærer de skaller A, som skal behandles, er horisontale.
I de i fig. 4 og 5 viste udførelsesformer har pladerne en hældning i forhold til horisontalen.
Som vist i fig. 4 har pladen 3 opadgående hældning i bevægelsesretningen for skallerne A, som transporteres frem ved hjælp af stavene 4.
En sådan udførelsesform giver en regelmæssig rotation af skallerne , selv om disses omdrejningsform ikke skulle være perfekt.
I henhold til fig. 5 har pladen 3 nedadgående hældning i bevægelsesretningen for skallerne A. Disse skaller drives frem af tyngdekraften, og i så fald holder stavene 4 skallerne tilbage. Ud over den under henvisning til fig. 4 nævnte fordel giver en sådan opstilling af pladen 3 fordelen af en bedre fjer-
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7528925 | 1975-09-22 | ||
| FR7528925A FR2325007A1 (fr) | 1975-09-22 | 1975-09-22 | Procede et dispositif pour le traitement par des gaz d'elements traversant une enceinte |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DK424176A DK424176A (da) | 1977-03-23 |
| DK144221B true DK144221B (da) | 1982-01-18 |
| DK144221C DK144221C (da) | 1982-06-21 |
Family
ID=9160266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK424176A DK144221C (da) | 1975-09-22 | 1976-09-21 | Anlaeg til varmebehandling af navnlig poroese cylindre og roer |
Country Status (32)
| Country | Link |
|---|---|
| JP (1) | JPS6030611B2 (da) |
| AR (1) | AR208621A1 (da) |
| AT (1) | AT363852B (da) |
| AU (1) | AU507413B2 (da) |
| BE (1) | BE846405A (da) |
| BR (1) | BR7606257A (da) |
| CA (1) | CA1069296A (da) |
| CH (1) | CH608290A5 (da) |
| CS (1) | CS209875B2 (da) |
| DD (1) | DD126898A5 (da) |
| DE (1) | DE2642173C2 (da) |
| DK (1) | DK144221C (da) |
| EG (1) | EG12609A (da) |
| ES (1) | ES451682A1 (da) |
| FI (1) | FI63484C (da) |
| FR (1) | FR2325007A1 (da) |
| GB (1) | GB1534597A (da) |
| GR (1) | GR59990B (da) |
| HU (1) | HU180066B (da) |
| IE (1) | IE43181B1 (da) |
| IN (1) | IN144936B (da) |
| IT (1) | IT1070593B (da) |
| LU (1) | LU75840A1 (da) |
| MX (1) | MX3686E (da) |
| NL (1) | NL7610461A (da) |
| NO (1) | NO148572C (da) |
| NZ (1) | NZ182111A (da) |
| PT (1) | PT65620B (da) |
| SE (1) | SE425434B (da) |
| TR (1) | TR19545A (da) |
| YU (1) | YU39368B (da) |
| ZA (1) | ZA765134B (da) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2963878D1 (en) * | 1978-05-26 | 1982-11-25 | Hepworth Iron Co Ltd | Method and apparatus for firing ceramic products |
| EP0131955B2 (de) * | 1983-07-19 | 1993-01-20 | A.P.T. Anlagen für Pyrotechnik GmbH | Verfahren zur Wärmebehandlung von zylindrischen Gegenständen, insbesondere Röhren, insbesondere aus keramischem Material, und Durchlaufofen zur Durchführung des Verfahrens |
| FR2583498B1 (fr) * | 1985-06-14 | 1987-08-07 | Saint Gobain Isover | Procede et dispositif de fabrication de coquilles en fibres minerales |
| GB8813814D0 (en) * | 1988-06-10 | 1988-07-13 | Naylor Bros Clayware Ltd | Conveyor mechanism |
| JPH03135101A (ja) * | 1989-10-02 | 1991-06-10 | Motorola Inc | ループ・アンテナ |
| GB9202450D0 (en) * | 1992-02-05 | 1992-03-18 | Hydraload Res & Dev Ltd | Improvements in or relating to kilns |
| DE19617717A1 (de) * | 1996-05-03 | 1997-11-06 | Christian Roffler | Verfahren zum kontinuierlichen Brennen keramischer Rohre und Ofen zur Durchführung dieses Verfahrens |
| DE19731753B4 (de) * | 1997-07-23 | 2007-06-21 | Seho Systemtechnik Gmbh | Reflow-Lötanlage |
| DE102017130653A1 (de) * | 2017-12-20 | 2019-06-27 | Schaeffler Technologies AG & Co. KG | Fördereinrichtung sowie Inline-Beschichtungsanlage mit einer derartigen Fördereinrichtung |
-
1975
- 1975-09-22 FR FR7528925A patent/FR2325007A1/fr active Granted
-
1976
- 1976-08-26 ZA ZA765134A patent/ZA765134B/xx unknown
- 1976-09-02 JP JP51104362A patent/JPS6030611B2/ja not_active Expired
- 1976-09-15 EG EG565/76A patent/EG12609A/xx active
- 1976-09-16 CS CS766019A patent/CS209875B2/cs unknown
- 1976-09-16 GB GB38370/76A patent/GB1534597A/en not_active Expired
- 1976-09-16 IT IT27265/76A patent/IT1070593B/it active
- 1976-09-17 AR AR264750A patent/AR208621A1/es active
- 1976-09-17 SE SE7610366A patent/SE425434B/xx unknown
- 1976-09-20 FI FI762684A patent/FI63484C/fi not_active IP Right Cessation
- 1976-09-20 DD DD194868A patent/DD126898A5/xx unknown
- 1976-09-20 IE IE2078/76A patent/IE43181B1/en unknown
- 1976-09-20 DE DE2642173A patent/DE2642173C2/de not_active Expired
- 1976-09-20 IN IN1730/CAL/1976A patent/IN144936B/en unknown
- 1976-09-20 CA CA261,522A patent/CA1069296A/en not_active Expired
- 1976-09-20 HU HU76SA2975A patent/HU180066B/hu unknown
- 1976-09-20 NZ NZ182111A patent/NZ182111A/xx unknown
- 1976-09-20 ES ES451682A patent/ES451682A1/es not_active Expired
- 1976-09-20 GR GR51732A patent/GR59990B/el unknown
- 1976-09-21 BE BE170791A patent/BE846405A/xx not_active IP Right Cessation
- 1976-09-21 YU YU2318/76A patent/YU39368B/xx unknown
- 1976-09-21 DK DK424176A patent/DK144221C/da not_active IP Right Cessation
- 1976-09-21 NL NL7610461A patent/NL7610461A/xx active Search and Examination
- 1976-09-21 MX MX764933U patent/MX3686E/es unknown
- 1976-09-21 CH CH1196176A patent/CH608290A5/xx not_active IP Right Cessation
- 1976-09-21 LU LU75840A patent/LU75840A1/xx unknown
- 1976-09-21 AU AU17953/76A patent/AU507413B2/en not_active Expired
- 1976-09-21 PT PT65620A patent/PT65620B/pt unknown
- 1976-09-21 BR BR7606257A patent/BR7606257A/pt unknown
- 1976-09-21 TR TR19545A patent/TR19545A/xx unknown
- 1976-09-21 NO NO763229A patent/NO148572C/no unknown
- 1976-09-22 AT AT0703876A patent/AT363852B/de not_active IP Right Cessation
Also Published As
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| Publication | Publication Date | Title |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PBP | Patent lapsed |