Patent search ap:("WESTINGHOUSE ELECTRIC CORP") AND inv:"MCCANN JR GILBERT D" Page 1

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发明授权
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公开(公告)号：US2420891A

公开(公告)日：1947-05-20

申请号：US56488144

申请日：1944-11-23

Applicant: WESTINGHOUSE ELECTRIC CORP

Inventor： MCCANN JR GILBERT D , CRINER HARRY E

IPC: G06G7/48 , G06G7/63 , G06G7/64 , G06G7/70

CPC classification number: G06G7/48 , G06G7/63 , G06G7/64 , G06G7/70

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