Ring binder mechanism for notebooks and similar
IT7322686U1Inactive Publication Date: 1975-05-07CARTIERE PAOLO PIGNA
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Patent Information
- Authority / Receiving Office
- IT · IT
- Patent Type
- Utility models
- Current Assignee / Owner
- CARTIERE PAOLO PIGNA
- Filing Date
- 1973-11-07
- Publication Date
- 1975-05-07
- Estimated Expiration
- Not applicable · inactive patent
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