CA440277A - Perforateur - Google Patents

Perforateur

Info

Publication number
CA440277A
CA440277A CA440277A CA440277DA CA440277A CA 440277 A CA440277 A CA 440277A CA 440277 A CA440277 A CA 440277A CA 440277D A CA440277D A CA 440277DA CA 440277 A CA440277 A CA 440277A
Authority
CA
Canada
Prior art keywords
perforating apparatus
perforating
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
CA440277A
Other languages
English (en)
Inventor
A. Ford Eugene
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.)
International Business Machines Corp
Original Assignee
International Business Machines Corp
Publication date
Application granted granted Critical
Publication of CA440277A publication Critical patent/CA440277A/fr
Expired legal-status Critical Current

Links

CA440277A Perforateur Expired CA440277A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA440277T

Publications (1)

Publication Number Publication Date
CA440277A true CA440277A (fr) 1947-03-18

Family

ID=35555511

Family Applications (1)

Application Number Title Priority Date Filing Date
CA440277A Expired CA440277A (fr) Perforateur

Country Status (1)

Country Link
CA (1) CA440277A (fr)

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