Invention Grant
- Patent Title: Display backing and card
- Patent Title (中): 显示背板和卡
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Application No.: US50337630Application Date: 1930-12-19
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Publication No.: US1959578APublication Date: 1934-05-22
- Inventor: GARFIELD JAMES L
- Applicant: GARFIELD JAMES L
- Assignee: James L Garfield
- Current Assignee: James L Garfield
- Priority: US50337630 1930-12-19
- Main IPC: G09F1/04
- IPC: G09F1/04
Information query
