EP0131187A2 - Echangeur de chaleur pour le chauffage de produits organiques - Google Patents

Echangeur de chaleur pour le chauffage de produits organiques Download PDF

Info

Publication number
EP0131187A2
EP0131187A2 EP84107158A EP84107158A EP0131187A2 EP 0131187 A2 EP0131187 A2 EP 0131187A2 EP 84107158 A EP84107158 A EP 84107158A EP 84107158 A EP84107158 A EP 84107158A EP 0131187 A2 EP0131187 A2 EP 0131187A2
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
jacket
housing
cover
exchanger according
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.)
Granted
Application number
EP84107158A
Other languages
German (de)
English (en)
Other versions
EP0131187B1 (fr
EP0131187A3 (en
Inventor
Dieter Engelhardt
Original Assignee
KLOCKNER GEFI KG INDUSTRIELLE WARMETECHNIK
GEFI KLOECKNER
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by KLOCKNER GEFI KG INDUSTRIELLE WARMETECHNIK, GEFI KLOECKNER filed Critical KLOCKNER GEFI KG INDUSTRIELLE WARMETECHNIK
Priority to AT84107158T priority Critical patent/ATE32258T1/de
Publication of EP0131187A2 publication Critical patent/EP0131187A2/fr
Publication of EP0131187A3 publication Critical patent/EP0131187A3/de
Application granted granted Critical
Publication of EP0131187B1 publication Critical patent/EP0131187B1/fr
Expired legal-status Critical Current

Links

Images

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/22Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating
    • F24H1/40Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water tube or tubes
    • F24H1/43Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water tube or tubes helically or spirally coiled
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23MCASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
    • F23M5/00Casings; Linings; Walls
    • F23M5/08Cooling thereof; Tube walls
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/06Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with the heat-exchange conduits forming part of, or being attached to, the tank containing the body of fluid
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/02Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being helically coiled
    • F28D7/024Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being helically coiled the conduits of only one medium being helically coiled tubes, the coils having a cylindrical configuration
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S165/00Heat exchange
    • Y10S165/355Heat exchange having separate flow passage for two distinct fluids
    • Y10S165/40Shell enclosed conduit assembly
    • Y10S165/439Serially connected conduit assemblies, i.e. no manifold

Definitions

  • the invention relates to a heat exchanger for heating, in particular, organic heat transfer media with the aid of combustion gases, consisting of a housing with a jacket, base and cover and at least one pipe register accommodated in the housing, the housing having thermal protection and an inlet and an outlet for the combustion exhaust gases.
  • the flue gases can be generated in a separate combustion chamber or with a burner installed on the floor.
  • the jacket has a reinforcement or lining made of ceramic material, for example, brick, refractory bricks as heat protection.
  • ceramic material for example, brick, refractory bricks
  • an organic heat transfer medium such as a thermal oil
  • the object of the invention is to avoid undesired reheating of the heat transfer medium after switching off the system having the heat exchanger.
  • cooling systems through which a cooling medium flows, at least in regions, on the outside of the jacket, the bottom and the cover, e.g. welded full pipes, cooling jackets or half pipes are arranged, which are attached with their free edges to the relevant components.
  • this invention achieves a 100% containment of the flame with cooled surfaces and thus a lower flame temperature compared to conventional combustion chamber designs. This avoids the environmentally harmful nitrogen oxide pollution associated with higher combustion temperatures.
  • the cooling systems with their free edges on the assigned components, i.e.
  • the jacket, cover and base are welded, in particular on the cover and base, they can be laid in a meandering shape, but also spirally. Otherwise, a version is recommended in which the half-tubes are laid on the jacket as a spiral surrounding the jacket. This arrangement can also be varied with regard to different thermal loads on the individual housing parts in that the half-tubes are laid on the jacket as a spiral with a variable pitch.
  • the spiral will be installed with a small pitch in areas with high thermal loads and the spiral with a larger pitch in areas with lower thermal loads.
  • Versions with burner arrangement or flue gas inlet in the floor and concentrically arranged coils are characterized in that the combustion gases are deflected in the area of the cover. The flue gases then flow through the annular gaps formed by the coils and the cooled jacket to the round gas outlet. Since the greatest heat load on the jacket of the heat exchanger takes place in the area of the flue gas deflection, the spiral of the cooling pipes near the cover should have the smallest slope. The remaining areas of the jacket need to be cooled less, in particular cooling in the jacket area without an annular space can be dispensed with, because here the cooling is carried out by the pipe coil lying on the inside of the jacket.
  • the heat exchanger shown is used to heat organic heat transfer media in particular with the aid of combustion exhaust gases. It exists in its basic structure of a cylindrical steel jacket 1, which is closed at both ends by a cover 2 and a bottom 3.
  • a pipe register 5 is arranged, which consists of a spirally arranged pipe coil, the individual turns 6 of which are arranged close to one another and close to the inside of the jacket 1.
  • the pipe register has in the area of the bottom 3 the inlet connector 7 and extends to shortly before the cover 2.
  • the turns 6 merge into the turns 8 of a second pipe register 9, which is concentric with the first pipe register and around it also with close to one another lying turns 8 is arranged.
  • the second pipe register 9 ends at an outlet connection 15.
  • the jacket extension 12 extends from the cover 2 to approximately half the length of the jacket 1 and is connected to the jacket 1 via a radial flange 14.
  • an outlet connection 10 for the combustion exhaust gases is connected to the annular space 13.
  • the combustion exhaust gases consequently flow from the inlet connection 4 in the base 3 to the cover 2, where they are deflected into the annular space 13, which they leave through the outlet connection 10.
  • the annular space is delimited on the inside by the tightly lying turns 6 of the tube register 5.
  • the bottom 3 has inlet ports 4 for combustion gases of a burner, not shown.
  • cooling tubes are laid on the outside on cover 2 and base 3. These are half-tubes 16 which are welded with their free edges to the outside of cover 2 or base 3.
  • the half pipes 16 are laid in the form of meanders on the cover 2 and the bottom 3.
  • At the ends of the cooling coil there are connecting pieces 17 and 18, respectively, via which the cooling medium can be supplied or removed.
  • the jacket extension 12 also has a cooling coil on the outside in the form of a spiral made from half-tubes 19, which are welded with their free edges to the outside of the jacket extension 12.
  • the spiral has an uneven slope.
  • the slope in the lid area is small because the heat load is greatest there due to the deflection of the combustion exhaust gases.
  • the slope of the spiral becomes increasingly larger in the direction of the radial flange 14.
  • This spiral cooling coil also has connecting pieces 20, 21 through which a corresponding cooling medium can flow in or out.
  • the cooling coils formed by the half pipes 16 and 19 are to be flowed through by the organic heat transfer medium, which also flows through the pipe registers 5 and 9.
  • the organic heat transfer medium also flows through the pipe registers 5 and 9.
  • circuits can be realized in which the heat transfer medium flows first through the tube register 5 and 9 and then through the cooling coils formed by the half tubes 16 and 19 or vice versa.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
EP84107158A 1983-07-06 1984-06-22 Echangeur de chaleur pour le chauffage de produits organiques Expired EP0131187B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84107158T ATE32258T1 (de) 1983-07-06 1984-06-22 Waermetauscher zur aufheizung von organischen waermeuebertragungsmedien.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19838319454U DE8319454U1 (de) 1983-07-06 1983-07-06 Waermetauscher zur aufheizung von insbesondere organischen waermeuebertragungsmedien
DE8319454U 1983-07-06

Publications (3)

Publication Number Publication Date
EP0131187A2 true EP0131187A2 (fr) 1985-01-16
EP0131187A3 EP0131187A3 (en) 1985-05-15
EP0131187B1 EP0131187B1 (fr) 1988-01-27

Family

ID=6754894

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84107158A Expired EP0131187B1 (fr) 1983-07-06 1984-06-22 Echangeur de chaleur pour le chauffage de produits organiques

Country Status (4)

Country Link
US (1) US4556104A (fr)
EP (1) EP0131187B1 (fr)
AT (1) ATE32258T1 (fr)
DE (2) DE8319454U1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991003295A1 (fr) * 1989-09-06 1991-03-21 Hans Fuglede Procede de condensation fractionnelle de composants gazeux de combustion d'acide et appareil de mise en ×uvre du procede
NL1035252C2 (nl) * 2008-04-03 2009-10-06 Otte Holding B V M Inrichting voor opvang van gebruikt tapwater en/of regenwater en systeem voor het winnen van restwarmte daaruit.

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6561183B1 (en) 2000-10-31 2003-05-13 Sioux Steam Cleaner Corporation Fluid heater system with tiltable heater assembly
US6435174B1 (en) 2000-10-31 2002-08-20 Siout Steam Cleaner Corporation Fluid heater coil configuration and fabrication method
NZ542600A (en) * 2003-03-28 2007-05-31 Siddons Stevens Developments P Water heater/cooler with heat-conductive material between tube and wall of tank, and layer of material wrapped about tank in airtight manner
BE1016897A3 (fr) * 2005-12-16 2007-09-04 Bilteryst Pierre Jean Edgard C Installation geothermodynamique.
US20120125595A1 (en) 2010-11-19 2012-05-24 Siemens S.A. de C.V. Exhaust duct having modular, multi zone, spirally arrayed cooling coils and method for cooling
US8438864B2 (en) * 2011-03-04 2013-05-14 General Electric Company Transcritical heat pump water heater and method of operation
JP6834772B2 (ja) * 2017-05-22 2021-02-24 株式会社ノーリツ 温水装置
US11920873B2 (en) 2018-10-09 2024-03-05 Linde Gmbh Wound heat exchanger, method for producing a wound heat exchanger and method for exchanging heat between a first fluid and a second fluid
CN114413657A (zh) * 2021-12-23 2022-04-29 合肥通用机械研究院有限公司 一种矩阵式高温气体冷却器

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1551027A (fr) * 1966-10-01 1968-12-27
DE2608977A1 (de) * 1975-03-04 1976-09-16 Breda Backer Rueb Maschf Waermeaustauscher fuer gasfoermige medien, insbesondere aggressive gase
DE2514342A1 (de) * 1975-04-02 1976-10-14 Huth Wolf Dieter Dipl Kfm Waermeaustauscher fuer behaelter
FR2319844A1 (fr) * 1975-07-30 1977-02-25 Konus Kessel Waermetech Installation pour chauffer un fluide caloporteur tout en evitant la surchauffe de ce dernier
US4205720A (en) * 1979-01-05 1980-06-03 Joseph Epstein Heat transfer conduit
GB2095815A (en) * 1981-03-27 1982-10-06 Mueller & Co Schwelmer Eisen A treatment vessel having a jacket adapted as a heat exchanger

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1133563A (en) * 1907-05-21 1915-03-30 Hugo Junkers Liquid-heating apparatus.
US1980425A (en) * 1934-01-19 1934-11-13 Leigh F Morgan Water heater
US2621635A (en) * 1949-02-22 1952-12-16 Joosten Jean Steam generator
US2650808A (en) * 1950-11-09 1953-09-01 Abraham J Cohen Carbonator cooler
US2823652A (en) * 1954-11-30 1958-02-18 Kellogg M W Co Helical coil heater
US3280903A (en) * 1964-12-21 1966-10-25 Universal Silencer Corp Exhaust silencer and heat recovery unit
US3998188A (en) * 1971-04-13 1976-12-21 Beverley Chemical Engineering Company, Ltd. Heater for heating a fluid

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1551027A (fr) * 1966-10-01 1968-12-27
DE2608977A1 (de) * 1975-03-04 1976-09-16 Breda Backer Rueb Maschf Waermeaustauscher fuer gasfoermige medien, insbesondere aggressive gase
DE2514342A1 (de) * 1975-04-02 1976-10-14 Huth Wolf Dieter Dipl Kfm Waermeaustauscher fuer behaelter
FR2319844A1 (fr) * 1975-07-30 1977-02-25 Konus Kessel Waermetech Installation pour chauffer un fluide caloporteur tout en evitant la surchauffe de ce dernier
US4205720A (en) * 1979-01-05 1980-06-03 Joseph Epstein Heat transfer conduit
GB2095815A (en) * 1981-03-27 1982-10-06 Mueller & Co Schwelmer Eisen A treatment vessel having a jacket adapted as a heat exchanger

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
R.H. PERRY u.a.: "Chemical Engineers' Handbook", 5. Ausgabe, 1974, Seiten 11-25 und 11-26, Kapitel Nr. 11: "Heat-transfer equipment", McGraw-Hill International Book Company; *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991003295A1 (fr) * 1989-09-06 1991-03-21 Hans Fuglede Procede de condensation fractionnelle de composants gazeux de combustion d'acide et appareil de mise en ×uvre du procede
NL1035252C2 (nl) * 2008-04-03 2009-10-06 Otte Holding B V M Inrichting voor opvang van gebruikt tapwater en/of regenwater en systeem voor het winnen van restwarmte daaruit.
WO2009123458A1 (fr) * 2008-04-03 2009-10-08 M. Otte Holding B.V. Dispositif pour recueillir de l'eau du robinet utilisée et/ou de l'eau de pluie et système pour récupérer de la chaleur résiduelle à partir de celle-ci

Also Published As

Publication number Publication date
ATE32258T1 (de) 1988-02-15
DE8319454U1 (de) 1983-12-29
US4556104A (en) 1985-12-03
DE3469056D1 (en) 1988-03-03
EP0131187B1 (fr) 1988-01-27
EP0131187A3 (en) 1985-05-15

Similar Documents

Publication Publication Date Title
EP0235277B1 (fr) Dispositif de combustion de constituants oxydables dans un gaz porteur a nettoyer
DE8104381U1 (de) Gas-fluessigkeit-waermetauscher
EP0131187A2 (fr) Echangeur de chaleur pour le chauffage de produits organiques
EP0499883B1 (fr) Echangeur de chaleur
EP3032172A1 (fr) Installation de postcombustion thermique
EP3159646A1 (fr) Échangeur de chaleur
DE7827419U1 (de) Einrichtung zur rueckgewinnung von waerme aus heissen abgasen
EP0446435A2 (fr) Dispositif pour la combustion des composants oxydables dans un courant d'air d'échappement
EP0903539B1 (fr) Brûleur avec régénérateur
EP0128463B1 (fr) Appareil de chauffage des locaux pour des locaux de petite dimension
DE4420477C2 (de) Industriebrenner mit regenerativer Luftvorwärmung
DE3640970A1 (de) Rohrbuendelwaermetauscher
DE3000541C2 (de) Anordnung zur Zuführung von fluidizierendem Gas in die das Wirbelbett enthaltende Kammer eines Wirbelbettapparates
DE10350765B4 (de) Satz von thermischen Nachverbrennungsvorrichtungen
EP0575755A1 (fr) Chaudière sectionnée
DE3107664C2 (de) Einrichtung zur Nachverbrennung organischer Bestandteile in Proßesabgasen
EP0663563A1 (fr) Guidage de gaz de combustion
DE19959467B4 (de) Doppelrohrsicherheitswärmeübertrager
DE2230127B2 (de) Reaktionsapparat zur Durchführung endothermer chemischer Prozesse
DE2309696C3 (de) Heizungskessel mit Umlenkkammer
CH660460A5 (de) Rekombinator.
DE3428829A1 (de) Oel/gas-heizkessel
DE2950533C2 (de) Rekuperator
CH425140A (de) Gliederheizkessel für flüssige und gasförmige Brennstoffe
DE546011C (de) Roehrenlufterhitzer

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LI NL

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LI NL

17P Request for examination filed

Effective date: 19850830

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: ENGELHARDT, DIETER

RIN1 Information on inventor provided before grant (corrected)

Inventor name: ENGELHARDT, DIETER

17Q First examination report despatched

Effective date: 19860307

D17Q First examination report despatched (deleted)
GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE FR GB IT LI NL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19880127

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 19880127

Ref country code: BE

Effective date: 19880127

REF Corresponds to:

Ref document number: 32258

Country of ref document: AT

Date of ref document: 19880215

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3469056

Country of ref document: DE

Date of ref document: 19880303

ET Fr: translation filed
NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
GBV Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed]
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19881123

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19900613

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19900625

Year of fee payment: 7

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Effective date: 19910622

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19920228

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19930615

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19930719

Year of fee payment: 10

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19940630

Ref country code: CH

Effective date: 19940630

REG Reference to a national code

Ref country code: CH

Ref legal event code: AUV

Free format text: DAS OBENGENANNTE PATENT IST, MANGELS BEZAHLUNG DER 11. JAHRESGEBUEHR, GELOESCHT WORDEN.

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19960702