Spray oil
    72.
    发明授权
    Spray oil 失效
    喷油

    公开(公告)号:US2183781A

    公开(公告)日:1939-12-19

    申请号:US6094136

    申请日:1936-01-27

    Applicant: UNION OIL CO

    Inventor: BRAY ULRIC B

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