Invention Grant
- Patent Title: Adjustable pierce unit
- Patent Title (中): 可调节穿孔单元
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Application No.: US29442763Application Date: 1963-07-11
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Publication No.: US3205742APublication Date: 1965-09-14
- Inventor: WILLIAMSON FLOYD M
- Applicant: DRO ENGINEERING COMPANY DI
- Assignee: Dro Engineering Company Di
- Current Assignee: Dro Engineering Company Di
- Priority: US29442763 1963-07-11
- Main IPC: B21D28/34
- IPC: B21D28/34
Public/Granted literature
- USD736254S1 Display panel or screen with an icon Public/Granted day:2015-08-11
Information query
