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公开(公告)号：US2292885A
公开(公告)日：1942-08-11
申请号：US39268841
申请日：1941-05-09
Applicant: BELL TELEPHONE LABOR INC
Inventor： MASON WARREN P
CPC classification number: H03H9/56
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公开(公告)号：US2274079A
公开(公告)日：1942-02-24
申请号：US35725240
申请日：1940-09-18
Applicant: BELL TELEPHONE LABOR INC
Inventor： MASON WARREN P
CPC classification number: H03H9/02157 , H03H9/02023 , H03H9/56
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公开(公告)号：US2272994A
公开(公告)日：1942-02-10
申请号：US37012740
申请日：1940-12-14
Applicant: BELL TELEPHONE LABOR INC
Inventor： MASON WARREN P
CPC classification number: H03H9/02157 , H03H9/19
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公开(公告)号：US2271870A
公开(公告)日：1942-02-03
申请号：US30375739
申请日：1939-11-10
Applicant: BELL TELEPHONE LABOR INC
Inventor： MASON WARREN P
CPC classification number: H03H9/0095 , H03H9/542 , H03H9/566 , H03H9/60
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公开(公告)号：US2166763A
公开(公告)日：1939-07-18
申请号：US13116037
申请日：1937-03-16
Applicant: BELL TELEPHONE LABOR INC
Inventor： MASON WARREN P
IPC: E04F11/112 , H01H57/00 , H04L25/04
CPC classification number: E04F11/112 , H01H57/00
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Patent Agency Ranking
公开(公告)号：US2094044A
公开(公告)日：1937-09-28
申请号：US2946335
申请日：1935-07-02
Applicant: BELL TELEPHONE LABOR INC
Inventor： MASON WARREN P
IPC: C07C209/48 , G04F5/06 , H03H9/00 , H03H9/05 , H03H9/135 , H03H9/21 , H03H9/52 , H03H9/54 , H03H9/60 , H03H9/62
CPC classification number: H03H9/0095 , C07C209/48 , G04F5/063 , H03H9/60
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公开(公告)号：US2045991A
公开(公告)日：1936-06-30
申请号：US65362233
申请日：1933-01-26
Applicant: BELL TELEPHONE LABOR INC
Inventor： MASON WARREN P
CPC classification number: H03H9/542 , H03H9/0095 , H03H9/545
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公开(公告)号：US1967250A
公开(公告)日：1934-07-24
申请号：US65362133
申请日：1933-01-26
Applicant: BELL TELEPHONE LABOR INC
Inventor： MASON WARREN P
CPC classification number: H03H9/0095 , H03H9/542
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公开(公告)号：US1781469A
公开(公告)日：1930-11-11
申请号：US20153527
申请日：1927-06-25
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：US3278696A
公开(公告)日：1966-10-11
申请号：US28727963
申请日：1963-06-12
Applicant: BELL TELEPHONE LABOR INC
Inventor： MASON WARREN P
IPC: H04R23/00
CPC classification number: H04R23/006
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