Envelope with a protruding appendix from the insertion opening, to prevent the contents from leaking out by folding the closing flap together with the said appendix
IT7411689U1Inactive Publication Date: 1976-04-07S I T C A SPA
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Patent Information
- Authority / Receiving Office
- IT · IT
- Patent Type
- Utility models
- Current Assignee / Owner
- S I T C A SPA
- Filing Date
- 1974-10-07
- Publication Date
- 1976-04-07
- Estimated Expiration
- Not applicable · inactive patent
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