发明授权
- 专利标题: Filter and purifier.
- 专利标题(中): 过滤器和净化器
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申请号: US1902093552申请日: 1902-02-11
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公开(公告)号: US779201A公开(公告)日: 1905-01-03
- 发明人: BLACKMARR FREDERICK S , WILLFORD JOSEPH L
- 申请人: BLACKMARR FREDERICK S , WILLFORD JOSEPH L
- 专利权人: Frederick S Blackmarr,Joseph L Willford
- 当前专利权人: Frederick S Blackmarr,Joseph L Willford
- 优先权: US1902093552 1902-02-11
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