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公开(公告)号：US1755163A
公开(公告)日：1930-04-15
申请号：US60838822
申请日：1922-12-22
Applicant: VISOMETER CORP
Inventor： PULVERMAN PHILIP E
IPC: B60C23/00
CPC classification number: B60C23/0496 , Y10T137/3662
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公开(公告)号：US1629887A
公开(公告)日：1927-05-24
申请号：US40075220
申请日：1920-08-02
Applicant: VISOMETER CORP
Inventor： PULVERMAN PHILIP E
IPC: G01L17/00
CPC classification number: G01L17/00 , Y10T137/3662
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