Patent search ap:("BELL TELEPHONE LABOR INC") AND inv:"THADDEUS SLONCZEWSKI" Page 3

21.

发明授权
Carrier frequency heterodyne oscillator 失效
Title translation: 载波频率外差振荡器

公开(公告)号：US2252870A

公开(公告)日：1941-08-19

申请号：US25132139

申请日：1939-01-17

Applicant: BELL TELEPHONE LABOR INC

Inventor： THADDEUS SLONCZEWSKI

IPC: H03B5/10 , H04J1/06

CPC classification number: H04J1/06 , H03B5/10

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