Invention Grant
- Patent Title: Method for the manufacture of wheels
- Patent Title (中): 车轮制造方法
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Application No.: US44680421Application Date: 1921-02-21
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Publication No.: US1460147APublication Date: 1923-06-26
- Inventor: SWAIN JOSEPH G
- Applicant: FIRESTONE STEEL PRODUCTS CO
- Assignee: Firestone Steel Products Co
- Current Assignee: Firestone Steel Products Co
- Priority: US44680421 1921-02-21; US31716219 1919-08-13
- Main IPC: B21D53/16
- IPC: B21D53/16 ; B60B23/06
Information query
