MECHANICAL PENCIL WITH PASTEL LEAD AND SIMILAR WITH PROGRESSIVE ADVANCE FOR MUTUAL HELICAL ENGAGEMENT
IT7422637U1Inactive Publication Date: 1976-06-20MONDIAL LUS
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Patent Information
- Authority / Receiving Office
- IT · IT
- Patent Type
- Utility models
- Current Assignee / Owner
- MONDIAL LUS
- Filing Date
- 1974-12-20
- Publication Date
- 1976-06-20
- Estimated Expiration
- Not applicable · inactive patent
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