Invention Grant
- Patent Title: Line spacing mechanism for typing machines
- Patent Title (中): 打字机的线间距机制
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Application No.: US16002650Application Date: 1950-05-04
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Publication No.: US2599535APublication Date: 1952-06-10
- Inventor: ALLEN AVERY HENRY , BARKDOLL JOSEPH P
- Applicant: L C SMITH & CORONA TYPEWRITERS
- Assignee: L C Smith & Corona Typewriters
- Current Assignee: L C Smith & Corona Typewriters
- Priority: US16002650 1950-05-04
- Main IPC: B41J19/84
- IPC: B41J19/84
Public/Granted literature
- US10907386B2 Side door pushbutton releases Public/Granted day:2021-02-02
Information query
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