EP1166901A2 - Spirale de nettoyage pour machines de nettoyage de tuyaux - Google Patents

Spirale de nettoyage pour machines de nettoyage de tuyaux Download PDF

Info

Publication number
EP1166901A2
EP1166901A2 EP01112110A EP01112110A EP1166901A2 EP 1166901 A2 EP1166901 A2 EP 1166901A2 EP 01112110 A EP01112110 A EP 01112110A EP 01112110 A EP01112110 A EP 01112110A EP 1166901 A2 EP1166901 A2 EP 1166901A2
Authority
EP
European Patent Office
Prior art keywords
grooves
outside
projections
windings
spring shaft
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
EP01112110A
Other languages
German (de)
English (en)
Other versions
EP1166901B1 (fr
EP1166901A3 (fr
Inventor
Helmut Dr.-Jur. Rhotenberger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rothenberger AG
Original Assignee
Rothenberger Werkzeuge AG
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 Rothenberger Werkzeuge AG filed Critical Rothenberger Werkzeuge AG
Publication of EP1166901A2 publication Critical patent/EP1166901A2/fr
Publication of EP1166901A3 publication Critical patent/EP1166901A3/fr
Application granted granted Critical
Publication of EP1166901B1 publication Critical patent/EP1166901B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
    • B08B9/027—Cleaning the internal surfaces; Removal of blockages
    • B08B9/04—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes
    • B08B9/043—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved by externally powered mechanical linkage, e.g. pushed or drawn through the pipes
    • B08B9/045—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved by externally powered mechanical linkage, e.g. pushed or drawn through the pipes the cleaning devices being rotated while moved, e.g. flexible rotating shaft or "snake"

Definitions

  • the invention relates to a spring shaft for cleaning pipelines according to the preamble of claim 1.
  • Such spring shafts also called “cleaning spirals” usually consist of a coiled, drawn Steel wire with a round cross-section and a smooth surface. You will be on at the end via connecting couplings with a wide variety of tools provided like drills, cutting heads, chain slingshot heads, Pipe brushes, root cutters, mud drills etc.
  • the drive machines and their mode of operation are described in the detailed description explained in more detail.
  • the known spring shafts have essentially only drive character.
  • the tools used are by the spring shaft, the can also be composed of several spring shafts, in clogged Pipelines introduced, whereby they are also through elbows, pipe branches etc. "work through”. The withdrawal is done by repentance the direction of rotation, with persistent blockages also periodic Forward and retreat movements can be performed.
  • DE 38 32 716 C2 is a spring shaft with a cross section in Known form of a rectangle or trapezoid, of which two are opposite lying edges run parallel to the axis of the spring shaft.
  • the outer these helical edges lie in an imaginary Cylinder surface if you consider the straight position of the spring shaft.
  • the known device is used to line the inner walls of Tubes, and at the end of the spring shaft there are several in a row rotationally symmetrical distribution body for a liquid coating material arranged by a hose inside the spring shaft runs, fed and when the spring shaft retracts through the Distribution body is distributed on the pipe wall.
  • the spring shaft only has a drive function: for reasons of limitation of diameter changes when turning the spring shaft forwards and backwards these have a rectangular or trapezoidal shape defined by formulas Cross-section.
  • the use of the spring shaft itself as a cleaning device is neither disclosed nor suggested, especially since it is expressly stated is for cleaning the inner wall of the pipe at the front end of the spring shaft Cleaning devices must be attached.
  • the object of the invention is to provide such spring shafts to improve it while maintaining its drive function can have a cleaning effect themselves.
  • the task is solved in full, i.e. the spring shafts can maintain their drive function themselves have a cleaning effect and to a certain extent also scrape stubborn incrustations from the tube walls, which are made of ceramics, Cast iron or plastic can exist.
  • the profile can be created by rolling, grinding or milling if necessary, also on the wire before winding. In this case it is only pay attention to precise guidance when turning.
  • a spring shaft 1 for a not shown Pipe cleaning device shown in a known manner from a portable or mobile prime mover, which has an electric motor and has a clutch driven by it.
  • This clutch contains sector-shaped Clutch shoes that can be pressed radially onto the spring shaft, the contact pressure determines the torque of the spring shaft.
  • the spring shaft 1 consists of a coil spring 2 made of spring steel, with an axis of rotation RA and a plurality of turns 3, the Outside 4 is provided with a profile 5 in which there are projections 6 and grooves 7 and 8 alternate.
  • the projections 6 are at least in a circumferential direction of the winding axis (WA-WA) is formed with sharp edges.
  • the projections 6 are surrounded by the grooves 7 and 8.
  • the Profiling 5 naturally extends over the entire length of the spring shaft 1.
  • the grooves 7 and 8 form two groups, of which the grooves 7 one Group essentially in the circumferential direction of the winding axis (WA-WA) run and the grooves 8 of the other group at an angle to this, the is between 30 and 60 degrees.
  • the arrangement is such that the projections 6 extend in the circumferential direction of the winding axis (WA-WA) overlap such that clutch shoes of a drive machine for the The spring shaft cannot fall into the grooves 8.
  • the projections 6 are diamond-shaped in plan view.
  • FIG. 4 shows various further exemplary embodiments of one Longitudinal section of a spring shaft 1.
  • the two ends shown correspond to the prior art with a cross section in the form of a Circular area.
  • the outer sides - seen in a stretched position - are in one dash-dot imaginary cylindrical surface Z.
  • the turn 3a consists of a wire with such a cross section, (hatched twice) that its outer helical Surface 4a is concave, so that two sharp edges "K” with each an opening angle of less than 90 degrees are formed between enclose a circumferential groove. This will create two sharp edges "K” formed, which act on the pipe walls and located there Scrape off incrustations.
  • the turn 3b consists of a wire with a square cross section (shown hatched twice), of which the surface diagonal 4b is radial runs to the axis of rotation RA. This creates a sharp edge K, which acts on the pipe walls and incrustations located there scrapes.
  • the square cross section can be a square, a rectangle. on Checked or a trapeze, of which at least 3a in the winding 3a Outer edge 4a can also be made concave to the scraping effect of the edges K to increase.
  • the turn 3c consists of a wire with an original Circular cross section (shown hatched twice), on the outside a groove 8 following the turns 3c is incorporated.
  • two sharp edges K are formed on the pipe walls act and scrape off any incrustations located there.
  • turns 3, 3a, 3b and 3c belong to different ones Spring waves.
  • the windings 3a to 3c produce besides the scraping effect also a "thread guide" of the spring shaft at all points where the The spring shaft lies firmly against the pipe wall, e.g. in elbows or Connection points.
  • the compression of the spring shaft under the force of the feed is then reduced, and the feed forces then develop to Part "on site". The same applies to withdrawal forces.
EP01112110A 2000-07-01 2001-05-17 Spirale de nettoyage pour machines de nettoyage de tuyaux Expired - Lifetime EP1166901B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10032144 2000-07-01
DE10032144A DE10032144C1 (de) 2000-07-01 2000-07-01 Federwelle für Rohrreinigungsgeräte

Publications (3)

Publication Number Publication Date
EP1166901A2 true EP1166901A2 (fr) 2002-01-02
EP1166901A3 EP1166901A3 (fr) 2003-08-13
EP1166901B1 EP1166901B1 (fr) 2006-04-19

Family

ID=7647516

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01112110A Expired - Lifetime EP1166901B1 (fr) 2000-07-01 2001-05-17 Spirale de nettoyage pour machines de nettoyage de tuyaux

Country Status (6)

Country Link
US (1) US7052554B2 (fr)
EP (1) EP1166901B1 (fr)
JP (1) JP2002096039A (fr)
AT (1) ATE323559T1 (fr)
DE (2) DE10032144C1 (fr)
ES (1) ES2261293T3 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007123335A1 (fr) * 2006-04-24 2007-11-01 E2St Inc. Câble flexible pour l'élimination de tartre dans un tuyau
KR100846104B1 (ko) * 2007-09-03 2008-07-15 주식회사 이투스텍 배관 스케일 제거기용 플랙시블 와이어
US10704250B2 (en) 2016-10-28 2020-07-07 Milwaukee Electric Tool Corporation Sewer cleaning machine
FI127933B (en) * 2018-04-09 2019-05-31 Innotia Eesti Oue Adaptive cleaning device
US11505229B2 (en) 2018-04-13 2022-11-22 Milwaukee Electric Tool Corporation Tool support
TWI695745B (zh) * 2018-12-20 2020-06-11 上鼎邑國際企業有限公司 管路清除器的簧線控制裝置
FI12795Y1 (fi) * 2020-08-31 2020-11-13 Zewer Oy Työkalu putkiston puhdistamiseksi
CN112958550B (zh) * 2021-01-29 2023-04-14 罗安群 一种应用于长管道的热除污方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2090174A (en) * 1935-08-07 1937-08-17 Albright William Fredrick Flexible drive shaft
GB974869A (en) * 1962-10-31 1964-11-11 Ward S Flexible Rod Company Lt Improvements relating to appliance for cleaning flues and pipes
DE3832716A1 (de) * 1987-09-07 1990-04-05 Osaka Gas Co Ltd Verfahren zum durchfuehren eines dahtes durch ein rohr, verfahren zum auskleiden der innenwaende eines rohres und vorrichtung zur durchfuehrung eines drahtes durch ein rohr

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2114236A (en) * 1937-06-22 1938-04-12 Pellette Clara Pipe cleaner
US2739368A (en) * 1953-11-25 1956-03-27 Centriline Corp Apparatus for cleaning pipe interiors
US2880435A (en) * 1955-01-18 1959-04-07 Herman T Hale Pipe cleaning apparatus
US2868299A (en) * 1956-03-05 1959-01-13 Gist Fred Morgan Well bore scratcher
US2997106A (en) * 1957-07-16 1961-08-22 James C Tripplehorn Paraffin scraper combination
US3011775A (en) * 1958-03-31 1961-12-05 Norman A Macleod Coil spring coupling and articles made from coil springs
US3149359A (en) * 1962-11-06 1964-09-22 Marco Products Co Wire spring auger head
US3176771A (en) * 1962-11-28 1965-04-06 Marshall L Claiborne Mud scraper

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2090174A (en) * 1935-08-07 1937-08-17 Albright William Fredrick Flexible drive shaft
GB974869A (en) * 1962-10-31 1964-11-11 Ward S Flexible Rod Company Lt Improvements relating to appliance for cleaning flues and pipes
DE3832716A1 (de) * 1987-09-07 1990-04-05 Osaka Gas Co Ltd Verfahren zum durchfuehren eines dahtes durch ein rohr, verfahren zum auskleiden der innenwaende eines rohres und vorrichtung zur durchfuehrung eines drahtes durch ein rohr

Also Published As

Publication number Publication date
JP2002096039A (ja) 2002-04-02
EP1166901B1 (fr) 2006-04-19
DE50109530D1 (de) 2006-05-24
US20020000015A1 (en) 2002-01-03
EP1166901A3 (fr) 2003-08-13
DE10032144C1 (de) 2001-10-31
US7052554B2 (en) 2006-05-30
ES2261293T3 (es) 2006-11-16
ATE323559T1 (de) 2006-05-15

Similar Documents

Publication Publication Date Title
DE2607501C2 (de) Tropfbewässerungsschlauch
DE2558542C2 (de) Wasserabflußrohr
WO2005084605A1 (fr) Appareil pour massage
EP0006511B1 (fr) Dispositif de nettoyage de tuyaux
EP1166901B1 (fr) Spirale de nettoyage pour machines de nettoyage de tuyaux
EP2277634B1 (fr) Appareil de nettoyage pour le nettoyage de conduits
DE102011103161A1 (de) Reinigungsvorrichtung
DE102008015532A1 (de) Reinigungsgerät für die Reinigung von Rohrleitungen
EP0084650A1 (fr) Lit immergé pour l'épuration des eaux d'égout
CH649011A5 (en) Pipe cleaning device in particular for internally coated pipes
DE102007052320A1 (de) Bürstenherstellungsmaschine
EP0086342B1 (fr) Dispositif d'inspection spécialement pour des tubes de générateur de vapeur
DE202008018563U1 (de) Reinigungsgerät für die Reinigung von Rohrleitungen
DE3151845A1 (de) Wellrohr mit zugentlastung und verfahren zu dessen herstellung aus kunststoff
DE3246718C1 (de) Einrichtung fuer die mechanische Reinigung eines Kuehlwasserstromes von Kraftwerkskondensatoren
EP0014453B1 (fr) Dispositif pour l'épuration biologique de l'eau
WO1987005740A1 (fr) Manchon de marquage pour conducteurs
DE2545353C3 (de) Rohrverbindungsmuffe
DE102013212885A1 (de) Reinigungsvorrichtung
DE3325472C1 (de) Vorrichtung zur Einspeisung von Reinigungskörpern
CH682944A5 (de) Rohr zum zugfesten Verbinden mit weiteren Rohren.
DE2815697C3 (de) Rühr- und Knetwendel
DE1955279B2 (de) Kunststoff rohrverbindungsstück für schraubenlinienförmig verlaufende Querrillen aufweisende Ent- oder Bewässerungsrohre
DE29919707U1 (de) Bausatz für Gartengestaltung
DE412458C (de) Abnehmbare Nabe

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

Kind code of ref document: A2

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

AX Request for extension of the european patent

Extension state: AL LT LV MK RO SI

RIC1 Information provided on ipc code assigned before grant

Ipc: 7E 03F 9/00 B

Ipc: 7B 08B 9/045 A

Ipc: 7F 16C 1/02 B

17P Request for examination filed

Effective date: 20030904

AKX Designation fees paid

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

RIN1 Information on inventor provided before grant (corrected)

Inventor name: ROTHENBERGER, HELMUT, DR.-JUR.

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

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

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060419

Ref country code: IE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060419

Ref country code: GB

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060419

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060419

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

Owner name: ROTHENBERGER AG

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: KEMENY AG PATENTANWALTBUERO

REF Corresponds to:

Ref document number: 50109530

Country of ref document: DE

Date of ref document: 20060524

Kind code of ref document: P

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

Ref country code: BE

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

Effective date: 20060531

Ref country code: MC

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

Effective date: 20060531

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

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

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060719

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060719

REG Reference to a national code

Ref country code: GR

Ref legal event code: EP

Ref document number: 20060402203

Country of ref document: GR

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

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060919

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]

Effective date: 20060419

REG Reference to a national code

Ref country code: IE

Ref legal event code: FD4D

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2261293

Country of ref document: ES

Kind code of ref document: T3

ET Fr: translation filed
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

Effective date: 20070122

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

Ref country code: ES

Payment date: 20070510

Year of fee payment: 7

BERE Be: lapsed

Owner name: ROTHENBERGER A.G.

Effective date: 20060531

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

Ref country code: IT

Payment date: 20070423

Year of fee payment: 7

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

Ref country code: GR

Payment date: 20070316

Year of fee payment: 7

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

Ref country code: FR

Payment date: 20070315

Year of fee payment: 7

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

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060419

Ref country code: LU

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

Effective date: 20060517

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

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060419

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20090119

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

Ref country code: FR

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

Effective date: 20080602

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

Ref country code: GR

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

Effective date: 20081204

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20080519

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

Ref country code: IT

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

Effective date: 20080517

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

Ref country code: ES

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

Effective date: 20080519

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 50109530

Country of ref document: DE

Representative=s name: KEIL & SCHAAFHAUSEN PATENT- UND RECHTSANWAELTE, DE

REG Reference to a national code

Ref country code: CH

Ref legal event code: PFA

Owner name: ROTHENBERGER AG

Free format text: ROTHENBERGER AG#INDUSTRIESTRASSE 7#65779 KELKHEIM / TS. (DE) -TRANSFER TO- ROTHENBERGER AG#INDUSTRIESTRASSE 7#65779 KELKHEIM / TS. (DE)

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

Ref country code: AT

Payment date: 20120511

Year of fee payment: 12

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

Ref country code: CH

Payment date: 20130523

Year of fee payment: 13

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 323559

Country of ref document: AT

Kind code of ref document: T

Effective date: 20140517

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

Ref country code: LI

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

Effective date: 20140531

Ref country code: CH

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

Effective date: 20140531

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

Ref country code: AT

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

Effective date: 20140517

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

Ref country code: DE

Payment date: 20200520

Year of fee payment: 20

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 50109530

Country of ref document: DE