Invention Grant
- Patent Title: Sheet lifter for looseleaf ring binder
- Patent Title (中): 用于松弛环的绑带
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Application No.: US3493310DApplication Date: 1967-12-29
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Publication No.: US3493310APublication Date: 1970-02-03
- Inventor: ORTH HENRY W , BYRNE JOHN R
- Applicant: STATIONERS LOOSE LEAF CO
- Assignee: Stationers Loose Leaf Co
- Current Assignee: Stationers Loose Leaf Co
- Priority: US69454067 1967-12-29
- Main IPC: B42F13/40
- IPC: B42F13/40 ; B42F13/14
Information query
