Invention Grant
- Patent Title: Tube-tapering apparatus
- Patent Title (中): 管锥形装置
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Application No.: US14966426Application Date: 1926-11-20
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Publication No.: US1783384APublication Date: 1930-12-02
- Inventor: FRIEDERICH MULLER
- Applicant: FRIEDERICH MULLER
- Assignee: Muller Friederich
- Current Assignee: Muller Friederich
- Priority: US14966426 1926-11-20
- Main IPC: B21C37/18
- IPC: B21C37/18
Public/Granted literature
- US09449619B1 Direction dependent tape head assembly to reduce tape-head friction Public/Granted day:2016-09-20
Information query
