FR398271A - Improvements to punching machines - Google Patents

Improvements to punching machines

Info

Publication number
FR398271A
FR398271A FR398271DA FR398271A FR 398271 A FR398271 A FR 398271A FR 398271D A FR398271D A FR 398271DA FR 398271 A FR398271 A FR 398271A
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)
Inventor
James Neilson Buchanan
John Wilson
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of FR398271A publication Critical patent/FR398271A/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
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/24—Perforating, i.e. punching holes
    • B21D28/34—Perforating tools; Die holders
FR398271D 1908-12-14 1909-01-04 Improvements to punching machines Expired FR398271A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB398271X 1908-12-14

Publications (1)

Publication Number Publication Date
FR398271A true FR398271A (en) 1909-06-01

Family

ID=1443301

Family Applications (1)

Application Number Title Priority Date Filing Date
FR398271D Expired FR398271A (en) 1908-12-14 1909-01-04 Improvements to punching machines

Country Status (1)

Country Link
FR (1) FR398271A (en)

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