Invention Grant
- Patent Title: Printing-plate and matrix
- Patent Title (中): 印版和矩阵
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Application No.: US36609820Application Date: 1920-03-15
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Publication No.: US1401633APublication Date: 1921-12-27
- Inventor: NOVOTNY EMIL E
- Applicant: JOHN STOGDELL STOKES
- Assignee: John Stogdell Stokes
- Current Assignee: John Stogdell Stokes
- Priority: US36609820 1920-03-15; GB695319 1919-03-20
- Main IPC: B41N1/12
- IPC: B41N1/12
Information query
