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公开(公告)号：US3310863A
公开(公告)日：1967-03-28
申请号：US27190263
申请日：1963-04-10
Applicant: BELL TELEPHONE LABOR INC
Inventor： ELLWOOD WALTER B , NIEDZWIECKI JOSEPH M
CPC classification number: H01H51/282 , H01H11/005 , Y10T29/49105 , Y10T29/49758
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公开(公告)号：US2508018A
公开(公告)日：1950-05-16
申请号：US415048
申请日：1948-01-24
Applicant: BELL TELEPHONE LABOR INC
Inventor： ELLWOOD WALTER B
IPC: H01H11/00
CPC classification number: H01H11/005 , Y10T29/49105
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公开(公告)号：US2277215A
公开(公告)日：1942-03-24
申请号：US34262840
申请日：1940-06-27
Applicant: BELL TELEPHONE LABOR INC
Inventor： ELLWOOD WALTER B
IPC: H01H51/28
CPC classification number: H01H51/284
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公开(公告)号：US3007855A
公开(公告)日：1961-11-07
申请号：US78351258
申请日：1958-12-29
Applicant: BELL TELEPHONE LABOR INC
Inventor： ELLWOOD WALTER B
CPC classification number: C25D5/10 , C25D5/36 , Y10S205/917 , Y10T29/49105 , Y10T29/49208
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公开(公告)号：US2523903A
公开(公告)日：1950-09-26
申请号：US2116048
申请日：1948-04-15
Applicant: BELL TELEPHONE LABOR INC
Inventor： ELLWOOD WALTER B
CPC classification number: H01H11/005 , H01H51/28 , Y10S65/12 , Y10T29/49105
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Patent Agency Ranking
公开(公告)号：US2505531A
公开(公告)日：1950-04-25
申请号：US79502947
申请日：1947-12-31
Applicant: BELL TELEPHONE LABOR INC
Inventor： ELLWOOD WALTER B
IPC: C25D17/06
CPC classification number: C25D17/06 , Y10T29/49105 , Y10T29/53196
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公开(公告)号：US2289830A
公开(公告)日：1942-07-14
申请号：US19862938
申请日：1938-03-29
Applicant: BELL TELEPHONE LABOR INC
Inventor： ELLWOOD WALTER B
IPC: H01H1/02
CPC classification number: H01H1/0201
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公开(公告)号：US2264746A
公开(公告)日：1941-12-02
申请号：US34262940
申请日：1940-06-27
Applicant: BELL TELEPHONE LABOR INC
Inventor： ELLWOOD WALTER B
IPC: H01H51/28
CPC classification number: H01H51/287
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公开(公告)号：US2535400A
公开(公告)日：1950-12-26
申请号：US11219049
申请日：1949-08-25
Applicant: BELL TELEPHONE LABOR INC
Inventor： ELLWOOD WALTER B
IPC: H01H51/28
CPC classification number: H01H51/287 , Y10T29/49105
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公开(公告)号：US2523360A
公开(公告)日：1950-09-26
申请号：US74397947
申请日：1947-04-25
Applicant: BELL TELEPHONE LABOR INC
Inventor： ELLWOOD WALTER B
IPC: H01H50/56
CPC classification number: H01H50/56
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