Invention Grant
- Patent Title: Impression adjuster for typewriters
- Patent Title (中): 打字机印象调节器
-
Application No.: US47871554Application Date: 1954-12-30
-
Publication No.: US2856052APublication Date: 1958-10-14
- Inventor: LUHN HANS P
- Applicant: IBM
- Assignee: Ibm
- Current Assignee: Ibm
- Priority: US47871554 1954-12-30
- Main IPC: B41J7/94
- IPC: B41J7/94 ; B41J29/393
Information query
IPC分类:
