FR2091840B1 - - Google Patents

Info

Publication number
FR2091840B1
FR2091840B1 FR7120046A FR7120046A FR2091840B1 FR 2091840 B1 FR2091840 B1 FR 2091840B1 FR 7120046 A FR7120046 A FR 7120046A FR 7120046 A FR7120046 A FR 7120046A FR 2091840 B1 FR2091840 B1 FR 2091840B1
Authority
FR
France
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
FR7120046A
Other languages
French (fr)
Other versions
FR2091840A1 (OSRAM
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.)
WITTERSHEIM JEAN PIERRE
Original Assignee
WITTERSHEIM JEAN PIERRE
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 WITTERSHEIM JEAN PIERRE filed Critical WITTERSHEIM JEAN PIERRE
Priority to FR7120046A priority Critical patent/FR2091840B1/fr
Publication of FR2091840A1 publication Critical patent/FR2091840A1/fr
Application granted granted Critical
Publication of FR2091840B1 publication Critical patent/FR2091840B1/fr
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D11/00—Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00; Twisting
    • B21D11/06—Bending into helical or spiral form; Forming a succession of return bends, e.g. serpentine form
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/12—Making tubes or metal hoses with helically arranged seams

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
FR7120046A 1971-06-02 1971-06-02 Expired FR2091840B1 (OSRAM)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7120046A FR2091840B1 (OSRAM) 1971-06-02 1971-06-02

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7120046A FR2091840B1 (OSRAM) 1971-06-02 1971-06-02

Publications (2)

Publication Number Publication Date
FR2091840A1 FR2091840A1 (OSRAM) 1972-01-21
FR2091840B1 true FR2091840B1 (OSRAM) 1974-02-15

Family

ID=9078022

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7120046A Expired FR2091840B1 (OSRAM) 1971-06-02 1971-06-02

Country Status (1)

Country Link
FR (1) FR2091840B1 (OSRAM)

Also Published As

Publication number Publication date
FR2091840A1 (OSRAM) 1972-01-21

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Legal Events

Date Code Title Description
TP Transmission of property
ST Notification of lapse