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公开(公告)号：US3576453A
公开(公告)日：1971-04-27
申请号：US3576453D
申请日：1969-05-02
Applicant: BELL TELEPHONE LABOR INC
Inventor： MASON WARREN P
CPC classification number: H03H9/566
Abstract: A crystal wafer supports two or more pairs of opposing electrodes to form a monolithic crystal filter. The wafer material has a high piezoelectric coupling coefficient. Inharmonic oscillations are suppressed by plating the electrodes on the surfaces of recesses in the faces of the wafer.
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公开(公告)号：US3143672A
公开(公告)日：1964-08-04
申请号：US22373062
申请日：1962-09-14
Applicant: BELL TELEPHONE LABOR INC
Inventor： MASON WARREN P
IPC: H03H9/19
CPC classification number: H03H9/19
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公开(公告)号：US3015708A
公开(公告)日：1962-01-02
申请号：US82454859
申请日：1959-07-02
Applicant: BELL TELEPHONE LABOR INC
Inventor： MASON WARREN P
IPC: G11C21/02
CPC classification number: G11C21/026
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公开(公告)号：US2981905A
公开(公告)日：1961-04-25
申请号：US75611358
申请日：1958-08-20
Applicant: BELL TELEPHONE LABOR INC
Inventor： MASON WARREN P
IPC: H03H9/50
CPC classification number: H03H9/50
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公开(公告)号：US2706326A
公开(公告)日：1955-04-19
申请号：US28391352
申请日：1952-04-23
Applicant: BELL TELEPHONE LABOR INC
Inventor： MASON WARREN P
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Patent Agency Ranking
公开(公告)号：US2669666A
公开(公告)日：1954-02-16
申请号：US29595252
申请日：1952-06-27
Applicant: BELL TELEPHONE LABOR INC
Inventor： MASON WARREN P , MATTHIAS BERND T
CPC classification number: H03H9/17 , H03H9/02015 , H03H9/02133
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公开(公告)号：US2607858A
公开(公告)日：1952-08-19
申请号：US3404048
申请日：1948-06-19
Applicant: BELL TELEPHONE LABOR INC
Inventor： MASON WARREN P
IPC: H04R17/00
CPC classification number: H04R17/00
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公开(公告)号：US2467325A
公开(公告)日：1949-04-12
申请号：US71958546
申请日：1946-12-31
Applicant: BELL TELEPHONE LABOR INC
Inventor： MASON WARREN P
IPC: G02F1/03
CPC classification number: G02F1/0305
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公开(公告)号：US2450434A
公开(公告)日：1948-10-05
申请号：US65946946
申请日：1946-04-04
Applicant: BELL TELEPHONE LABOR INC
Inventor： MASON WARREN P
CPC classification number: H03H9/02015 , H03H9/02157
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公开(公告)号：US2442773A
公开(公告)日：1948-06-08
申请号：US53425944
申请日：1944-05-05
Applicant: BELL TELEPHONE LABOR INC
Inventor： MASON WARREN P
IPC: F41A21/30
CPC classification number: F41A21/30
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