Invention Grant
- Patent Title: Attachment for typewriter ribbon
- Patent Title (中): 打字机色带附件
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Application No.: US79581059Application Date: 1959-02-26
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Publication No.: US3022879APublication Date: 1962-02-27
- Inventor: HEIDT WILLIAM A , ROLLER DONALD C
- Applicant: IBM
- Assignee: Ibm
- Current Assignee: Ibm
- Priority: US79581059 1959-02-26; US881603X 1959-02-26; US1153385X 1959-02-26
- Main IPC: B41J31/10
- IPC: B41J31/10
Information query
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