US2470251A - Slide fastener - Google Patents

Slide fastener Download PDF

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Publication number
US2470251A
US2470251A US726106A US72610647A US2470251A US 2470251 A US2470251 A US 2470251A US 726106 A US726106 A US 726106A US 72610647 A US72610647 A US 72610647A US 2470251 A US2470251 A US 2470251A
Authority
US
United States
Prior art keywords
tape
article
edge
thermoplastic material
threads
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 - Lifetime
Application number
US726106A
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English (en)
Inventor
Kolbert Oswald
Messer Albert Sherman
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.)
Waldes Kohinoor Inc
Original Assignee
Waldes Kohinoor Inc
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
Priority to BE486963D priority Critical patent/BE486963A/xx
Priority to DEM81990D priority patent/DE486963C/de
Application filed by Waldes Kohinoor Inc filed Critical Waldes Kohinoor Inc
Priority to US726106A priority patent/US2470251A/en
Priority to CH272820D priority patent/CH272820A/de
Priority to DEP1769A priority patent/DE947455C/de
Priority to FR982867D priority patent/FR982867A/fr
Application granted granted Critical
Publication of US2470251A publication Critical patent/US2470251A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B19/00Engines characterised by precombustion chambers
    • F02B19/02Engines characterised by precombustion chambers the chamber being periodically isolated from its cylinder
    • F02B19/04Engines characterised by precombustion chambers the chamber being periodically isolated from its cylinder the isolation being effected by a protuberance on piston or cylinder head
    • AHUMAN NECESSITIES
    • A44HABERDASHERY; JEWELLERY
    • A44BBUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
    • A44B19/00Slide fasteners
    • A44B19/24Details
    • A44B19/34Stringer tapes; Flaps secured to stringers for covering the interlocking members
    • AHUMAN NECESSITIES
    • A44HABERDASHERY; JEWELLERY
    • A44BBUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
    • A44B19/00Slide fasteners
    • A44B19/24Details
    • A44B19/34Stringer tapes; Flaps secured to stringers for covering the interlocking members
    • A44B19/346Woven stringer tapes
    • AHUMAN NECESSITIES
    • A44HABERDASHERY; JEWELLERY
    • A44BBUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
    • A44B19/00Slide fasteners
    • A44B19/24Details
    • A44B19/40Connection of separate, or one-piece, interlocking members to stringer tapes; Reinforcing such connections, e.g. by stitching
    • 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/10Internal combustion engine [ICE] based vehicles
    • Y02T10/12Improving ICE efficiencies
    • 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
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T24/00Buckles, buttons, clasps, etc.
    • Y10T24/25Zipper or required component thereof
    • Y10T24/2539Interlocking surface constructed from plural elements in series
    • 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
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/49Method of mechanical manufacture
    • Y10T29/49782Method of mechanical manufacture of a slide fastener
    • Y10T29/49785Method of mechanical manufacture of a slide fastener of interlocking element

Definitions

  • FIG. 2 HG 3 l Snventors 0 oswAL'o KOLBERT, ALBERT s. M SSER,
  • This invention relates to improvements in slidefasteners and, with regard to its more specific aspects, to an improved stringer for a slide fastener of the type adapted to provide closure means for articles'fabricated from thermoplastic material, for example, handbags, waterproof garments such as raincoats, bandages, and the like,
  • the tapes were secured along their opposite or rear edges to the thermoplastic material bounding the opening by one or more lines of stitching.
  • Such mode of securement was found to be open to the objection, however, that the stitching was likely to tear out from the thermoplastic material due to its low stitch-strength, i. e. its tendency to tear when pierced by stitches.
  • a tape made from a rubber-like material is inherently stretchable in both length-wise and cross-wise directions, and as the interlocking fastener elements of a slide fastener must be accurately spaced for smooth functioning of the slider, it becomes self-evident that stretching of the tape on which the elements are mounted is highly objectionable.
  • It is a principal object of the invention to provide an improved stringer for use with slide fasteners providing the closure means for articles fabricated from thermoplastic material which incorporates a tape that can be applied to the edges of the article opening by a weldingor heat sealing process and which, at the same time, is so constituted that an edge bead can be simply and firmly attached by the conventional methods known in the art, and is moreover non-stretch- 5 Claims. (01. 139-384) able to the same degree as the prior woven fabric tapes to which the fastener elements could be applied with fixed spacing as is desirable.
  • the invention contemplates and aims to provide an improved tape for a slide fastener stringer which, while of the woven fabric type, is nevertheless so constructed and constituted that it may be applied to the edges of an opening of an article fabricated from thermoplastic material by a welding or heat-sealing process, 1. e. by the application of heat or heat and'pressure.
  • the foregoing objects are achieved according to the invention throughthe provision of a stringer which employs tapes of fabric woven in part from threads or yarn assuring proper attachment of an edge bead thereto by the various methods known in the art and the mounting of the fastener elements on the bead with accurate spacing and without the danger of the tape becoming permanently stretched in use and the elements losing their uniform spacing, and in part from threads or yarn-composed of thermoplastic material capable of being heat-welded to the thermoplastic material of the article.
  • the warp threads which are'remployed in weaving the longitudinal inner edge zone of the tape, i. e. the edge portion opposite to the bead are composed of thermoplastic material which is like or similar to thermoplastic material from which the article is fabricated, whereas the warp threads employed in the weaving, of the front edge zone of the tape,
  • thermoplastic warp threads only in the edge zone of the tape which is to be secured to the article, the non-stretchable properties characterizingthe conventional woven fabric tape is retained in the zone of the tape adjacent its element-carrying edge. Hence, distortion of the tape in frequent use as is likely to occur when made from rubber-like sheet material is avoided and smooth functioning of the slider is assured.
  • the tape is woven from threads of which the longitudinal or warp threads are composed of natural fibers such as cotton, and the weft or cross threads are of thermoplastic material.
  • the use of the thermoplastic weft threads provides for heat-sealing of the tape along its rear vertical edge to the thermoplastic material of the article, while the frontthat is to be secured to the and in succeeding views, the threads composed of from which all of the weft threads of;the mod- I ifled form of tapes are composed may be, one of thesuitable synthetic resins and the polymers.
  • thermoplastic material bounding the edges of the article opening can be readily heat-sealed to said edges as by the application of heat or heat and a pressure in the well known manner.
  • Fig. 1 is a weaving diagram of the tape employed in the improved stringer
  • Fig. 2 is a magnified plan view of a short length of tape following attachment of the element-securing edge bead;
  • Fig. 3 is a similar view of a finished stringer with elements mounted on the bead
  • Fig. 4 is a similar view showing the finished stringer applied to the edge of an article made from thermoplastic material:
  • Figs. 1A, 2A. 3A and 4A are sections taken through the tapes and stringers illustrated in Figs. 1-4, respectively; I
  • Fig. 5 is a weaving diagram of a modified form of tape.
  • Fig. 6 is a view similar to Fig. 4 illustrating a finished stringer employing a tape woven according to the Fig. 5 diagram applied to the edge of an article made from thermoplastic material.
  • Fig. 1 illustrates the weaving diagram of the preferred form of tape according to the invention, wherein reference character I designates the longitudinal or warp threads employed in the weaving of the front edge zone of the tape and which are in the nature of threads or yarn composed of natural fibers such as cotton, and reference character 2 designates the warp threads used in the weaving of the rear edge zone of the tape, 1. e. the portion article, the warp threads 2 being threads or yarn of thermoplastic material, such as vinyl chloride resin.
  • the wefts 3 which bind both the warp threads I and 2 may be and preferably are composed of natural yarn such as cotton.
  • the zone of the tape employing the cotton warp threads I extends approximately twothirds the width of the tape as measured from the front or left longitudinal edge thereof, with the width of the inner edge zone whose warp threads are of thermoplastic material extending the remaining one-third.
  • such proportioning may vary within reasonable limits.
  • Fig. 2 illustrates in greatly enlarged scale a tape woven as in the Fig. 1 diagram, to which the edge head I has been applied.
  • the bead l is shown to consist of two fabric cords la, 4b secured against the opposite faces ofthermoplastic material are identified by stippling.
  • the fastener elements 5 may be secured by running the tape through a conventional slide fastener assembling machine, for example. Since the bead 'and the adjacent zone of the tape is substantially non-stretchable, to the same degree that the conventional fabric tape is non-stretchable, the elements may be secured so as to have and maintain uniform pitch distance.
  • thermoplastic material designated Ii in Figs. 4 and 4A To secure the stringer to the article, the inner edge zone thereof whose warp in Fig- '5, all'of the warp threads employedin the weaving of the tape are made-from natural V yarn or filaments, such as cotton, which are substantially non stretchable in longitudinal direction, whereby the finished tape is also substantially non-stretchable longitudinally throughout its full width.
  • the weft threads .9 which 'bind the longitudinal warp threads 8 are in the nature of yarns or filamentscomposed of-thermoplastic material such as vinyl chloride resin.
  • a finished stringer I0 incorporating the modified tape illustrated in Fig. 5 may be attached to the thermoplastic material of the article 12 indicatedin Fig. 6 by the conventional heat-sealing process employed in securing the stringer as is illustrated in Figs. 4 and 4A.
  • Slide fastener stringers employing both of the disclosed forms of tape may be readily applied to articles made from thermoplastic material by the simple heat-sealing process described, it being observed that each of the thermoplastic warp threads 2 of the tape illustrated in Figs. 1-4, and each 'of the weft threads 9 for the width of the joint when the modified form of tape according to Figs. 5 and 6 is employed is individual-y sealed to the thermoplastic material of the article, so that a seam in the nature of lines of spot-welds is achieved. Moreover, due to the composition of the tape along its front or bead carrying edge or to the use of warp threads through the full width of the tape composed of cotton threads or yarns.
  • both forms of tapes according to the invention are substantially non-stretchable, so that the fastener elements applied thereto may have substantially uniform pitch spacing throughout the life of the stringer.
  • a woven fabric tape adapted to carry a bead along its longitudinal front edge, the longitudinal front edge zone of said tape being woven in part from threads or yarns of natural fibers which are arranged longitudinally, whereby the tape is substantially non-stretchable in the direction of its length, and the longitudinal rear edge zone of said tape which is adapted to be connected to the article being woven in part of threads or yarns of thermoplastic material, whereby the tape may be heat-sealed to the article along said rear zone.
  • a woven fabric tape adapted to carry a bead along its front longitudinal edge, the warp threads of the tape being composed of natural fibers and the weft threads of the tape being of thermoplastic material whereby the tape can be heat-sealed to the article along its rear longitudinal edge.
  • ma stringer for a slide fastener providing closure means for an article, a woven fabric tape adapted to carry a bead along its longitudinal front edge, said tape being woven in part of threads or yarns of natural fibers arranged longitudinally and in part of threads or yarns of thermoplastic material arranged so that the tape can be heat-sealed along its rear longitudinal edge to the article.
  • a woven fabric tape adapted to carry a bead along its front longitudinal edge, the warp threads of the tape in said tape may the zone adlacent its bead carrying edge being composed of natural fibers and the warp threads in the longitudinal rear edge zone of the tape being of thermoplastic material whereby the tape can be heat-sealed to the article along said rear zone.
  • a tape adapted to carry fastener elements along one longitudinal edge thereof, said tape having a plurality of longitudinally extending thermoplastic threads woven thereinto adjacent the opposite longitudinal edge only whereby be heat-sealed along said opposite longitudinal edge to the article.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion Methods Of Internal-Combustion Engines (AREA)
  • Slide Fasteners (AREA)
  • Decoration Of Textiles (AREA)
  • Woven Fabrics (AREA)
US726106A 1923-07-11 1947-02-03 Slide fastener Expired - Lifetime US2470251A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
BE486963D BE486963A (no) 1947-02-03
DEM81990D DE486963C (de) 1923-07-11 1923-07-11 Brennkraftmaschine mit Verbrennungskammer und einem auf dem Kolben angebrachten, nach Art eines Verdraengers wirkenden Vergasungsschaelchen
US726106A US2470251A (en) 1947-02-03 1947-02-03 Slide fastener
CH272820D CH272820A (de) 1947-02-03 1948-12-24 Tragband für Verschlussglieder, insbesondere für Reissverschlusselemente.
DEP1769A DE947455C (de) 1947-02-03 1949-02-08 Band fuer Reissverschluesse
FR982867D FR982867A (fr) 1947-02-03 1949-03-12 Perfectionnements aux fermetures, notamment aux fermetures à glissières

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US726106A US2470251A (en) 1947-02-03 1947-02-03 Slide fastener

Publications (1)

Publication Number Publication Date
US2470251A true US2470251A (en) 1949-05-17

Family

ID=24917271

Family Applications (1)

Application Number Title Priority Date Filing Date
US726106A Expired - Lifetime US2470251A (en) 1923-07-11 1947-02-03 Slide fastener

Country Status (5)

Country Link
US (1) US2470251A (no)
BE (1) BE486963A (no)
CH (1) CH272820A (no)
DE (2) DE486963C (no)
FR (1) FR982867A (no)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2607715A (en) * 1950-05-04 1952-08-19 Waldes Kohinoor Inc Separable fastener
US2684514A (en) * 1948-04-09 1954-07-27 Monica H Basel Fastening element
US2701222A (en) * 1951-04-05 1955-02-01 Brown & Bigelow Method of attaching zippers to a plastic body
DE938602C (de) * 1950-11-14 1956-02-02 Talon Inc Reissverschlussstreifenband und Verfahren zu seiner Herstellung
US2765814A (en) * 1953-05-12 1956-10-09 Electro Seal Corp Textile labels
US2903775A (en) * 1956-03-26 1959-09-15 Conmar Prod Corp Slide fasteners
US3089231A (en) * 1960-12-30 1963-05-14 Waldes Kohinoor Inc Slide fastener manufacture
US3103728A (en) * 1957-11-25 1963-09-17 Wahl Brothers Technique for assembling slide fasteners
DE1186667B (de) * 1960-02-10 1965-02-04 Hasenkamp K G E Reissverschluss
US3540084A (en) * 1967-01-21 1970-11-17 Opti Holding Ag Slide-fastener assembly for bed linen and the like
US3866275A (en) * 1973-04-12 1975-02-18 Textron Inc Slide fastener installation
US3883931A (en) * 1973-11-05 1975-05-20 Everett A Peterson Zipper structure
US3885276A (en) * 1972-09-18 1975-05-27 Textron Inc Slide fastener and method and apparatus for making the same
EP0399708A1 (en) * 1989-05-12 1990-11-28 Ykk Corporation Heat-sealable stringer tape for slide fasteners
US20140223699A1 (en) * 2011-09-09 2014-08-14 Ykk Corporation Fastener Tape for Slide Fastener, and Slide Fastener

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE898093C (de) * 1938-02-13 1953-11-26 Daimler Benz Ag Vorkammerdieselmaschine
DE976295C (de) * 1954-06-20 1963-06-20 Motoren Werke Mannheim Ag Brennkraftmaschine mit Brennstoffeinspritzung in einem im Kolben befindlichen Brennraum, in dem ein Einsatzkoerper angebracht ist
DE1070115B (no) * 1955-10-21
US3057334A (en) * 1961-01-12 1962-10-09 Caterpillar Tractor Co Piston head with fuel directing means
DE1435823B1 (de) * 1964-10-30 1970-08-27 Ri Ri Werk Gmbh Verfahren zum Anbringen eines Reissverschlusses an einem Traegerstoff
DE1610367B1 (de) * 1966-03-03 1970-01-29 Opti Werk Gmbh & Co Reissverschluss und Verfahren zu seiner Herstellung

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2068500A (en) * 1935-06-26 1937-01-19 Whitehall Patents Corp Mounting tape for separable fasteners
US2072095A (en) * 1935-11-04 1937-03-02 Tone Ribbon Corp Du Ribbon
US2144591A (en) * 1936-10-08 1939-01-17 Sullivan & Sons Mfg Co J Tape with corded edges
US2158112A (en) * 1935-08-31 1939-05-16 Celanese Corp Production of stiffened fabrics
US2186357A (en) * 1937-08-31 1940-01-09 Trubenizing Process Corp Interlining fabric
US2209238A (en) * 1937-06-01 1940-07-23 Sperber Meyer Method of manufacturing laminated fabric
US2298071A (en) * 1940-10-18 1942-10-06 Du Pont Stiffened fabric
US2368911A (en) * 1943-03-18 1945-02-06 Conmar Prod Corp Slide fastener stringer
US2396912A (en) * 1943-12-22 1946-03-19 Campbell Lee Stringer tape for slide fasteners
US2400924A (en) * 1944-02-29 1946-05-28 Jr John E Fite Tape for slide fasteners
GB578900A (en) * 1944-05-31 1946-07-16 Aero Zipp Fasteners Ltd Improved slider operated fasteners

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB592759A (en) * 1945-02-02 1947-09-29 George Henry Clifford Corner Improvements in or relating to sliding clasp fasteners
DE626533C (de) * 1934-03-07 1936-02-27 Josef Hora Reissverschluss
AT157282B (de) * 1936-06-09 1939-10-25 Benjamin Dr Liebowitz Verfahren zur Herstellung eines aus mehreren miteinander verwebten Lagen von Schuß- oder Kettfäden bestehenden Dickstoffgewebes.
US2266631A (en) * 1937-08-02 1941-12-16 Sylvania Ind Corp Woven fabric and method of making same
DE676830C (de) * 1937-09-01 1939-06-13 Benjamin Liebowitz Dr Einlagegewebe fuer Kleidungsstuecke
GB522663A (en) * 1938-12-20 1940-06-24 Standard Telephones Cables Ltd Improvements in or relating to sliding clasp fastening devices
DE741679C (de) * 1939-07-05 1943-11-15 Ig Farbenindustrie Ag Reissverschluss

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2068500A (en) * 1935-06-26 1937-01-19 Whitehall Patents Corp Mounting tape for separable fasteners
US2158112A (en) * 1935-08-31 1939-05-16 Celanese Corp Production of stiffened fabrics
US2072095A (en) * 1935-11-04 1937-03-02 Tone Ribbon Corp Du Ribbon
US2144591A (en) * 1936-10-08 1939-01-17 Sullivan & Sons Mfg Co J Tape with corded edges
US2209238A (en) * 1937-06-01 1940-07-23 Sperber Meyer Method of manufacturing laminated fabric
US2186357A (en) * 1937-08-31 1940-01-09 Trubenizing Process Corp Interlining fabric
US2298071A (en) * 1940-10-18 1942-10-06 Du Pont Stiffened fabric
US2368911A (en) * 1943-03-18 1945-02-06 Conmar Prod Corp Slide fastener stringer
US2396912A (en) * 1943-12-22 1946-03-19 Campbell Lee Stringer tape for slide fasteners
US2400924A (en) * 1944-02-29 1946-05-28 Jr John E Fite Tape for slide fasteners
GB578900A (en) * 1944-05-31 1946-07-16 Aero Zipp Fasteners Ltd Improved slider operated fasteners

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2684514A (en) * 1948-04-09 1954-07-27 Monica H Basel Fastening element
US2607715A (en) * 1950-05-04 1952-08-19 Waldes Kohinoor Inc Separable fastener
DE938602C (de) * 1950-11-14 1956-02-02 Talon Inc Reissverschlussstreifenband und Verfahren zu seiner Herstellung
US2701222A (en) * 1951-04-05 1955-02-01 Brown & Bigelow Method of attaching zippers to a plastic body
US2765814A (en) * 1953-05-12 1956-10-09 Electro Seal Corp Textile labels
US2903775A (en) * 1956-03-26 1959-09-15 Conmar Prod Corp Slide fasteners
US3103728A (en) * 1957-11-25 1963-09-17 Wahl Brothers Technique for assembling slide fasteners
DE1186667B (de) * 1960-02-10 1965-02-04 Hasenkamp K G E Reissverschluss
US3089231A (en) * 1960-12-30 1963-05-14 Waldes Kohinoor Inc Slide fastener manufacture
US3540084A (en) * 1967-01-21 1970-11-17 Opti Holding Ag Slide-fastener assembly for bed linen and the like
US3885276A (en) * 1972-09-18 1975-05-27 Textron Inc Slide fastener and method and apparatus for making the same
US3866275A (en) * 1973-04-12 1975-02-18 Textron Inc Slide fastener installation
US3883931A (en) * 1973-11-05 1975-05-20 Everett A Peterson Zipper structure
EP0399708A1 (en) * 1989-05-12 1990-11-28 Ykk Corporation Heat-sealable stringer tape for slide fasteners
US20140223699A1 (en) * 2011-09-09 2014-08-14 Ykk Corporation Fastener Tape for Slide Fastener, and Slide Fastener
US9668549B2 (en) * 2011-09-09 2017-06-06 Ykk Corporation Fastener tape for slide fastener, and slide fastener

Also Published As

Publication number Publication date
CH272820A (de) 1951-01-15
DE486963C (de) 1929-11-28
BE486963A (no)
FR982867A (fr) 1951-06-15
DE947455C (de) 1956-08-16

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