Patent search ap:("IBM") AND inv:"ROBBINS JOSEPH J" Page 1

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发明授权
Record sensing and comparing means 失效

公开(公告)号：US2448830A

公开(公告)日：1948-09-07

申请号：US74164447

申请日：1947-04-15

Applicant: IBM

Inventor： ROBBINS JOSEPH J , BLAKELY ROBERT T

IPC: B07C3/14 , G06K7/015

CPC classification number: B07C3/14 , G06K7/015

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