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公开(公告)号:US1221675A
公开(公告)日:1917-04-03
申请号:US1914870285
申请日:1914-11-04
Applicant: CARSON ROBERT W
Inventor: CARSON ROBERT W
CPC classification number: A01K13/004
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公开(公告)号:US2294831A
公开(公告)日:1942-09-01
申请号:US37510141
申请日:1941-01-21
Applicant: CARSON ROBERT W
Inventor: CARSON ROBERT W
IPC: G01B3/00
CPC classification number: G01B3/008
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公开(公告)号:US2302104A
公开(公告)日:1942-11-17
申请号:US44775042
申请日:1942-06-20
Applicant: CARSON ROBERT W
Inventor: CARSON ROBERT W
IPC: G01B3/00
CPC classification number: G01B3/008
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公开(公告)号:US2290940A
公开(公告)日:1942-07-28
申请号:US27452239
申请日:1939-05-19
Applicant: CARSON ROBERT W
Inventor: CARSON ROBERT W
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