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公开(公告)号:US2270355A
公开(公告)日:1942-01-20
申请号:US40188741
申请日:1941-07-11
Applicant: SWANSON CARL G
Inventor: SWANSON CARL G
IPC: G01B3/08
CPC classification number: G01B3/08
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公开(公告)号:US2784015A
公开(公告)日:1957-03-05
申请号:US35096753
申请日:1953-04-24
Applicant: SWANSON CARL G
Inventor: SWANSON CARL G
CPC classification number: F16B7/025 , E04H12/2269 , Y10T403/7039 , Y10T403/7054
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公开(公告)号:US2356544A
公开(公告)日:1944-08-22
申请号:US48931743
申请日:1943-06-02
Applicant: SWANSON CARL G
Inventor: SWANSON CARL G
IPC: G01B3/08
CPC classification number: G01B3/08
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