FR610788A - Helical groove punch - Google Patents

Helical groove punch

Info

Publication number
FR610788A
FR610788A FR610788DA FR610788A FR 610788 A FR610788 A FR 610788A FR 610788D A FR610788D A FR 610788DA FR 610788 A FR610788 A FR 610788A
Authority
FR
France
Prior art keywords
helical groove
groove punch
punch
helical
groove
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
French (fr)
Inventor
Max Lissau
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 FR610788A publication Critical patent/FR610788A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/14—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by boring or drilling
    • B28D1/146—Tools therefor

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
FR610788D 1925-02-20 1926-02-09 Helical groove punch Expired FR610788A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE610788X 1925-02-20

Publications (1)

Publication Number Publication Date
FR610788A true FR610788A (en) 1926-09-13

Family

ID=6576170

Family Applications (1)

Application Number Title Priority Date Filing Date
FR610788D Expired FR610788A (en) 1925-02-20 1926-02-09 Helical groove punch

Country Status (1)

Country Link
FR (1) FR610788A (en)

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