Invention Grant
- Patent Title: Pipeline ball and method of making
- Patent Title (中): 管道球和制作方法
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Application No.: US37100464Application Date: 1964-05-28
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Publication No.: US3343561APublication Date: 1967-09-26
- Inventor: BOWERMAN HULIE E
- Applicant: BOWERMAN HULIE E
- Assignee: Hulie E Bowerman
- Current Assignee: Hulie E Bowerman
- Priority: US37100464 1964-05-28
- Main IPC: B08B9/04
- IPC: B08B9/04 ; B08B9/055 ; B29C65/00 ; F16K15/20
Information query
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