Appliance for the study of a foreign language and systems of symbols,signs and marks
IL102991A0Inactive Publication Date: 1993-02-21ISAAK INDMAN
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Patent Information
- Application Number
- IL102991
- Authority / Receiving Office
- IL · IL
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 1992-08-30
- Publication Date
- 1993-02-21
- Estimated Expiration
- Not applicable · inactive patent
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