Invention Grant
- Patent Title: Method of making typewriter ribbons
- Patent Title (中): 制作打字机色带的方法
-
Application No.: US8818436Application Date: 1936-06-30
-
Publication No.: US2104237APublication Date: 1938-01-04
- Inventor: NEIDICH SAMUEL A
- Applicant: UNDERWOOD ELLIOTT FISHER CO
- Assignee: Underwood Elliott Fisher Co
- Current Assignee: Underwood Elliott Fisher Co
- Priority: US8818436 1936-06-30; US6623936 1936-02-28
- Main IPC: B41J31/04
- IPC: B41J31/04
Information query
IPC分类: