CA489365A - Method of preparing record cards with conductive marks - Google Patents

Method of preparing record cards with conductive marks

Info

Publication number
CA489365A
CA489365A CA489365A CA489365DA CA489365A CA 489365 A CA489365 A CA 489365A CA 489365 A CA489365 A CA 489365A CA 489365D A CA489365D A CA 489365DA CA 489365 A CA489365 A CA 489365A
Authority
CA
Canada
Prior art keywords
record cards
conductive marks
preparing record
preparing
marks
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
CA489365A
Other languages
French (fr)
Inventor
H. Wolowitz William
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 CA489365A publication Critical patent/CA489365A/en
Expired legal-status Critical Current

Links

CA489365A Method of preparing record cards with conductive marks Expired CA489365A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA489365T

Publications (1)

Publication Number Publication Date
CA489365A true CA489365A (en) 1953-01-06

Family

ID=35629092

Family Applications (1)

Application Number Title Priority Date Filing Date
CA489365A Expired CA489365A (en) Method of preparing record cards with conductive marks

Country Status (1)

Country Link
CA (1) CA489365A (en)

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