FR955778A - - Google Patents

Info

Publication number
FR955778A
FR955778A FR955778DA FR955778A FR 955778 A FR955778 A FR 955778A FR 955778D A FR955778D A FR 955778DA FR 955778 A FR955778 A FR 955778A
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
Other languages
French (fr)
Publication date
Application granted granted Critical
Publication of FR955778A publication Critical patent/FR955778A/fr
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H3/00—Making helical bodies or bodies having parts of helical shape

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
FR955778D Expired FR955778A (zh)

Publications (1)

Publication Number Publication Date
FR955778A true FR955778A (zh) 1950-01-19

Family

ID=1558451

Family Applications (1)

Application Number Title Priority Date Filing Date
FR955778D Expired FR955778A (zh)

Country Status (1)

Country Link
FR (1) FR955778A (zh)

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