Device for the conversion of a piano into a harpsichord and a device for muting the strings of a piano or piano / harpsichord

IL32479A0Inactive Publication Date: 1969-08-27BENI EVEN +1

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Patent Information

Application Number: IL32479
Authority / Receiving Office: IL · IL
Patent Type: Applications
Current Assignee / Owner
Filing Date: 1969-06-24
Publication Date: 1969-08-27
Estimated Expiration: Not applicable · inactive patent

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