CA423889A - Sheet material perforating apparatus - Google Patents

Sheet material perforating apparatus

Info

Publication number
CA423889A
CA423889A CA423889A CA423889DA CA423889A CA 423889 A CA423889 A CA 423889A CA 423889 A CA423889 A CA 423889A CA 423889D A CA423889D A CA 423889DA CA 423889 A CA423889 A CA 423889A
Authority
CA
Canada
Prior art keywords
sheet material
perforating apparatus
material perforating
sheet
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
CA423889A
Other languages
French (fr)
Inventor
F. Wales George
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
Publication date
Application granted granted Critical
Publication of CA423889A publication Critical patent/CA423889A/en
Expired legal-status Critical Current

Links

CA423889A Sheet material perforating apparatus Expired CA423889A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA423889T

Publications (1)

Publication Number Publication Date
CA423889A true CA423889A (en) 1944-11-21

Family

ID=35534899

Family Applications (1)

Application Number Title Priority Date Filing Date
CA423889A Expired CA423889A (en) Sheet material perforating apparatus

Country Status (1)

Country Link
CA (1) CA423889A (en)

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