FR490612A - Improvements to punching machines - Google Patents

Improvements to punching machines

Info

Publication number
FR490612A
FR490612A FR490612DA FR490612A FR 490612 A FR490612 A FR 490612A FR 490612D A FR490612D A FR 490612DA FR 490612 A FR490612 A FR 490612A
Authority
FR
France
Prior art keywords
punching machines
punching
machines
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)
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.)
COMMERCIAL TRUCK Co OF AM
Original Assignee
COMMERCIAL TRUCK Co OF AM
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 COMMERCIAL TRUCK Co OF AM filed Critical COMMERCIAL TRUCK Co OF AM
Application granted granted Critical
Publication of FR490612A publication Critical patent/FR490612A/en
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
    • B21D31/00—Other methods for working sheet metal, metal tubes, metal profiles
    • B21D31/02—Stabbing or piercing, e.g. for making sieves

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
FR490612D 1918-06-25 1918-06-25 Improvements to punching machines Expired FR490612A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR490612T 1918-06-25

Publications (1)

Publication Number Publication Date
FR490612A true FR490612A (en) 1919-05-01

Family

ID=1526716

Family Applications (1)

Application Number Title Priority Date Filing Date
FR490612D Expired FR490612A (en) 1918-06-25 1918-06-25 Improvements to punching machines

Country Status (1)

Country Link
FR (1) FR490612A (en)

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