GB1401232A - Multiunit filters - Google Patents

Multiunit filters

Info

Publication number
GB1401232A
GB1401232A GB1846874A GB1846874A GB1401232A GB 1401232 A GB1401232 A GB 1401232A GB 1846874 A GB1846874 A GB 1846874A GB 1846874 A GB1846874 A GB 1846874A GB 1401232 A GB1401232 A GB 1401232A
Authority
GB
United Kingdom
Prior art keywords
end caps
filter medium
filter
joined
softening
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.)
Expired
Application number
GB1846874A
Other languages
English (en)
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.)
Pall Corp
Original Assignee
Pall Corp
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 Pall Corp filed Critical Pall Corp
Publication of GB1401232A publication Critical patent/GB1401232A/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61LMETHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2/00Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
    • A61L2/02Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using physical phenomena
    • A61L2/022Filtration
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D29/00Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/11Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
    • B01D29/111Making filtering elements
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D29/00Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/11Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
    • B01D29/13Supported filter elements
    • B01D29/15Supported filter elements arranged for inward flow filtration
    • B01D29/21Supported filter elements arranged for inward flow filtration with corrugated, folded or wound sheets
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D29/00Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/50Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition
    • B01D29/56Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in series connection
    • B01D29/58Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in series connection arranged concentrically or coaxially
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D39/00Filtering material for liquid or gaseous fluids
    • B01D39/08Filter cloth, i.e. woven, knitted or interlaced material
    • B01D39/083Filter cloth, i.e. woven, knitted or interlaced material of organic material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D39/00Filtering material for liquid or gaseous fluids
    • B01D39/14Other self-supporting filtering material ; Other filtering material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B29/00Layered products comprising a layer of paper or cardboard
    • B32B29/02Layered products comprising a layer of paper or cardboard next to a fibrous or filamentary layer
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/022Non-woven fabric
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04Interconnection of layers
    • B32B7/12Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2239/00Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/04Additives and treatments of the filtering material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2239/00Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/04Additives and treatments of the filtering material
    • B01D2239/0464Impregnants
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2239/00Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/06Filter cloth, e.g. knitted, woven non-woven; self-supported material
    • B01D2239/0604Arrangement of the fibres in the filtering material
    • B01D2239/0627Spun-bonded
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2239/00Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/06Filter cloth, e.g. knitted, woven non-woven; self-supported material
    • B01D2239/065More than one layer present in the filtering material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2239/00Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/06Filter cloth, e.g. knitted, woven non-woven; self-supported material
    • B01D2239/065More than one layer present in the filtering material
    • B01D2239/0654Support layers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2239/00Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/06Filter cloth, e.g. knitted, woven non-woven; self-supported material
    • B01D2239/065More than one layer present in the filtering material
    • B01D2239/0668The layers being joined by heat or melt-bonding
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2239/00Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/06Filter cloth, e.g. knitted, woven non-woven; self-supported material
    • B01D2239/065More than one layer present in the filtering material
    • B01D2239/0681The layers being joined by gluing
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2239/00Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/08Special characteristics of binders
    • B01D2239/086Binders between particles or fibres
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2239/00Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/12Special parameters characterising the filtering material
    • B01D2239/1216Pore size
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2239/00Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/12Special parameters characterising the filtering material
    • B01D2239/1233Fibre diameter
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10Inorganic fibres
    • B32B2262/101Glass fibres
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2305/00Condition, form or state of the layers or laminate
    • B32B2305/02Cellular or porous
    • B32B2305/026Porous

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Textile Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Veterinary Medicine (AREA)
  • Public Health (AREA)
  • Animal Behavior & Ethology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Epidemiology (AREA)
  • Filtering Materials (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Nonwoven Fabrics (AREA)
  • Paper (AREA)
  • Measuring Or Testing Involving Enzymes Or Micro-Organisms (AREA)
GB1846874A 1971-09-17 1972-08-17 Multiunit filters Expired GB1401232A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US18148271A 1971-09-17 1971-09-17

Publications (1)

Publication Number Publication Date
GB1401232A true GB1401232A (en) 1975-07-16

Family

ID=22664454

Family Applications (2)

Application Number Title Priority Date Filing Date
GB3842872A Expired GB1401231A (en) 1971-09-17 1972-08-17 Fluid-permeable materials contsining potassium titanate fibres and process of making the same
GB1846874A Expired GB1401232A (en) 1971-09-17 1972-08-17 Multiunit filters

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB3842872A Expired GB1401231A (en) 1971-09-17 1972-08-17 Fluid-permeable materials contsining potassium titanate fibres and process of making the same

Country Status (11)

Country Link
JP (1) JPS4848775A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
AU (1) AU472936B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
BE (1) BE788293A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
CA (1) CA980528A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE2244811A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FR (1) FR2152984A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (2) GB1401231A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
IL (3) IL40195A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
IT (1) IT965383B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
NL (1) NL7212555A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
ZA (1) ZA725640B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0083789A3 (en) * 1982-01-13 1984-03-07 Pall Corporation Corrugated filter element with external spiral tape support
GB2194902A (en) * 1986-09-09 1988-03-23 Domnick Hunter Filters Ltd Filter element
EP0213930A3 (en) * 1985-08-27 1988-10-05 Kennecott Corporation Method and structure for integral forming of filter cartridge end caps
WO1996033001A1 (en) * 1995-04-21 1996-10-24 Donaldson Company, Inc. Pleated filter and a method for making the same

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4086266A (en) * 1977-04-06 1978-04-25 Population Research Incorporated Method of bacterially purifying methyl cyanoacrylate
JPS5631099A (en) * 1979-08-21 1981-03-28 Otsuka Kagaku Yakuhin Fiber paper
JPS574710A (en) * 1980-06-13 1982-01-11 Mitsubishi Mining & Cement Co Manufacture of ceramic porous body
NZ205183A (en) * 1982-08-13 1987-01-23 Unilever Plc Wiping cloth includes a liquid"active material"
NZ206331A (en) * 1982-11-26 1986-05-09 Unilever Plc Liquid-permeable,flexible,sheet-like articles
JPS6065199A (ja) * 1983-09-21 1985-04-13 株式会社興人 繊維状チタン酸アルカリ金属塩の抄造方法
FR2555207B1 (fr) * 1983-11-18 1986-02-21 Comp Generale Electricite Materiau fibreux pour diaphragme d'electrolyseur et diaphragme comportant un tel materiau
US4594162A (en) * 1984-02-13 1986-06-10 American Filtrona Corporation Pleated filter and method and apparatus for fabricating same
JPS60226450A (ja) * 1984-04-25 1985-11-11 日東紡績株式会社 無機質多孔質体の製造方法
JPS61127680A (ja) * 1984-11-22 1986-06-14 三菱製紙株式会社 ウイスカ−シ−トの製造方法
US5252207A (en) * 1988-06-15 1993-10-12 Pall Corporation Wrap member having openings
DE4036551C2 (de) * 1990-08-14 1997-04-24 Reinhard Weber Filterpatrone sowie deren Herstellung
GB9019855D0 (en) * 1990-09-11 1990-10-24 Pall Corp Depth filter media
US5238474A (en) 1990-10-19 1993-08-24 Donaldson Company, Inc. Filtration arrangement
JP3139905B2 (ja) * 1993-12-29 2001-03-05 ニチアス株式会社 オイル塗布ローラのオイル保持筒
US5669949A (en) * 1995-04-21 1997-09-23 Donaldson Company, Inc. Air filtration arrangement
US5876640A (en) * 1995-07-04 1999-03-02 Nichias Corporation Process for producing a coating fluid holding member
US5858044A (en) 1996-07-11 1999-01-12 Donaldson Company, Inc. Filter arrangement including removable filter with first and second media secured together
US6007608A (en) 1998-07-10 1999-12-28 Donaldson Company, Inc. Mist collector and method
US9599350B2 (en) 2008-09-24 2017-03-21 Ellis Fibre Usa Flame resistant filter apparatus and method
WO2010036781A1 (en) * 2008-09-24 2010-04-01 Clean Systems Llc Flame resistant viscose filter apparatus and method
US10167137B2 (en) 2008-09-24 2019-01-01 Efip Holdings Lp Flame resistant viscose filter apparatus and method
US11434068B2 (en) 2008-09-24 2022-09-06 Restaurant Technologies, Inc. Flame resistant filter apparatus and method
US8277530B2 (en) 2008-09-24 2012-10-02 Ellis Fibre Usa Grease removal apparatus, systems and methods
JP5658726B2 (ja) * 2012-10-31 2015-01-28 大幸機器株式会社 フィルタ装置
GB2543763B (en) * 2015-10-26 2022-08-31 Univ Of Bolton Filtration apparatus with sustainability benefits
JP6570153B1 (ja) * 2018-10-31 2019-09-04 株式会社アースクリーンテクノ 空気中浮遊物捕集材、これを用いる空気浄化部材及び空気浄化装置

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0083789A3 (en) * 1982-01-13 1984-03-07 Pall Corporation Corrugated filter element with external spiral tape support
EP0213930A3 (en) * 1985-08-27 1988-10-05 Kennecott Corporation Method and structure for integral forming of filter cartridge end caps
GB2194902A (en) * 1986-09-09 1988-03-23 Domnick Hunter Filters Ltd Filter element
GB2194902B (en) * 1986-09-09 1990-01-10 Domnick Hunter Filters Ltd Filter element and method of making a filter element
WO1996033001A1 (en) * 1995-04-21 1996-10-24 Donaldson Company, Inc. Pleated filter and a method for making the same
US5814219A (en) * 1995-04-21 1998-09-29 Donaldson Company, Inc. Pleated filter having a planar sheet of randomly arranged filaments to maintain pleat spacing
AU715109B2 (en) * 1995-04-21 2000-01-20 Donaldson Company Inc. Pleated filter and a method for making the same
CN1068795C (zh) * 1995-04-21 2001-07-25 唐纳森公司 褶皱式过滤器制造方法

Also Published As

Publication number Publication date
IT965383B (it) 1974-01-31
IL40195A0 (en) 1972-10-29
GB1401231A (en) 1975-07-16
CA980528A (en) 1975-12-30
ZA725640B (en) 1973-04-25
FR2152984A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1973-04-27
IL40195A (en) 1976-11-30
IL47917A0 (en) 1975-11-25
AU4564472A (en) 1974-02-21
NL7212555A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1973-03-20
BE788293A (fr) 1973-03-01
JPS4848775A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1973-07-10
AU472936B2 (en) 1976-06-10
DE2244811A1 (de) 1973-03-29
IL47917A (en) 1976-11-30

Similar Documents

Publication Publication Date Title
GB1401232A (en) Multiunit filters
US3306794A (en) Method of making a filter element
US3550423A (en) Method of making a sheet of material having asymmetrical folds
US4138303A (en) Method of forming screen packs
US4033881A (en) Multilayer paper sheet filter cartridges
EP0001407B1 (en) Tubular filter elements with improved side seam seal
CA1276890C (en) Porous filter media and membrane support means
US4935082A (en) Forming corrugated board structures
US3592767A (en) Laminated filter sheets and filter elements and process for making the same
DE2417551B2 (de) Filterelement
DE2948925A1 (de) Rohrfoermiges filterelement
DE4412756C2 (de) Schlaucheinheit und Verfahren zur Herstellung derselben
US3722696A (en) Spiral wound filter
US3865919A (en) Cylindrical filter elements with improved side seam seal
JP2507456B2 (ja) フィルタ−エレメントとその製法
US3106528A (en) Filter cartridge and method and means for making the same
CA1180287A (en) Polymer filter cartridge of glass fibers coated with fluoroethylene polymer and process for preparing the same
EP0347188B1 (en) A filter arrangement
CA1045050A (en) Multilayer paper sheet filter cartridges
JPS5524575A (en) Preparation of cartridge filter for precise filtration
EP0522692A3 (en) Filter
GB1066480A (en) Process for preparing filters having a microporous layer attached thereto and product
FI57527C (fi) Foerfarande och anordning foer framstaellning av ett roer av kontinuerligt fiberaemnesband saerskilt av papper foer filtrering av tobaksroek
DE2627169A1 (de) Gas-fluessigkeitsfiltereinheit und verfahren zu ihrer herstellung
JPH0470923B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees