FR705882A - Perfectionnements aux tuyaux - Google Patents

Perfectionnements aux tuyaux

Info

Publication number
FR705882A
FR705882A FR705882DA FR705882A FR 705882 A FR705882 A FR 705882A FR 705882D A FR705882D A FR 705882DA FR 705882 A FR705882 A FR 705882A
Authority
FR
France
Prior art keywords
pipe
pipe improvements
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
Other languages
English (en)
Inventor
Eric Maurice Bergstrom
William Pollard Digby
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 filed Critical
Application granted granted Critical
Publication of FR705882A publication Critical patent/FR705882A/fr
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, bars, wire, tubes 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
    • B21C37/15—Making tubes of special shape; Making tube fittings
    • B21C37/154—Making multi-wall tubes

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
FR705882D 1929-11-19 1930-11-18 Perfectionnements aux tuyaux Expired FR705882A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB705882X 1929-11-19

Publications (1)

Publication Number Publication Date
FR705882A true FR705882A (fr) 1931-06-16

Family

ID=10494034

Family Applications (1)

Application Number Title Priority Date Filing Date
FR705882D Expired FR705882A (fr) 1929-11-19 1930-11-18 Perfectionnements aux tuyaux

Country Status (1)

Country Link
FR (1) FR705882A (fr)

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