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公开(公告)号：US3020496A
公开(公告)日：1962-02-06
申请号：US73365058
申请日：1958-05-07
Applicant: LAB FOR ELECTRONICS INC
Inventor： ERWIN FEUERSTEIN , STERNBERG ROBERT L
IPC: H03H9/36
CPC classification number: H03H9/36
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