BE420680A - - Google Patents

Info

Publication number
BE420680A
BE420680A BE420680DA BE420680A BE 420680 A BE420680 A BE 420680A BE 420680D A BE420680D A BE 420680DA BE 420680 A BE420680 A BE 420680A
Authority
BE
Belgium
Application number
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.)
Publication of BE420680A publication Critical patent/BE420680A/xx

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
    • B21D15/00—Corrugating tubes
    • B21D15/04—Corrugating tubes transversely, e.g. helically
    • B21D15/06—Corrugating tubes transversely, e.g. helically annularly
    • 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
    • B21D17/00—Forming single grooves in sheet metal or tubular or hollow articles
    • B21D17/02—Forming single grooves in sheet metal or tubular or hollow articles by pressing

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
BE420680D 1937-03-19 BE420680A (ja)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE835318X 1937-03-19

Publications (1)

Publication Number Publication Date
BE420680A true BE420680A (ja)

Family

ID=3881828

Family Applications (2)

Application Number Title Priority Date Filing Date
BE420680D BE420680A (ja) 1937-03-19
BE426835D BE426835A (ja) 1937-03-19

Family Applications After (1)

Application Number Title Priority Date Filing Date
BE426835D BE426835A (ja) 1937-03-19

Country Status (2)

Country Link
BE (2) BE426835A (ja)
FR (1) FR835318A (ja)

Also Published As

Publication number Publication date
FR835318A (fr) 1938-12-19
BE426835A (ja)

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