Invention Grant
- Patent Title: Method for forming closed tubes
- Patent Title (中): 形成封闭管的方法
-
Application No.: US41282341Application Date: 1941-09-29
-
Publication No.: US2355792APublication Date: 1944-08-15
- Inventor: FRANCK GEORGE E
- Applicant: IMP BRASS MFG CO
- Assignee: Imp Brass Mfg Co
- Current Assignee: Imp Brass Mfg Co
- Priority: US41282341 1941-09-29; US36531340 1940-11-12
- Main IPC: B21D41/04
- IPC: B21D41/04 ; B65D35/00
Information query
