Arrangement of letters and numbers(digits)and various aids for quick reference in books whose parts are ordered in lexicographic sequence

IL91340A0Inactive Publication Date: 1990-03-19HUGHES AIRCRAFT CO

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Patent Information

Application Number: IL913
Authority / Receiving Office: IL · IL
Patent Type: Applications
Current Assignee / Owner
Filing Date: 1989-08-17
Publication Date: 1990-03-19
Estimated Expiration: Not applicable · inactive patent

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