Invention Grant
- Patent Title: Compound for the sharpening of tools
- Patent Title (中): 复合刀具磨刀
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Application No.: US46292521Application Date: 1921-04-20
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Publication No.: US1454369APublication Date: 1923-05-08
- Inventor: JACK ZIRSEN AAGE NIELS
- Applicant: JACK ZIRSEN AAGE NIELS
- Assignee: Zirsen Aage Niels Jack
- Current Assignee: Zirsen Aage Niels Jack
- Priority: US46292521 1921-04-20
- Main IPC: C23F1/06
- IPC: C23F1/06
Information query
IPC分类:
