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公开(公告)号:US1952859A
公开(公告)日:1934-03-27
申请号:US62837832
申请日:1932-08-11
Applicant: BELL TELEPHONE LABOR INC
Inventor: HAMPTON LEON N , GIERTSEN OYVIND N
IPC: B65G51/02
CPC classification number: B65G51/02
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公开(公告)号:US1658192A
公开(公告)日:1928-02-07
申请号:US13335526
申请日:1926-09-03
Applicant: BELL TELEPHONE LABOR INC
Inventor: HAMPTON LEON N
IPC: E06C9/12
CPC classification number: E06C9/12
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