Bruce F. Kovach

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Detroit, MI, US

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Patents Grantslast 30 patents

Information Patent Grant
Piano tuning mutes
- Patent number 4,452,122
- Issue date Jun 5, 1984
- Bruce F. Kovach
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Precision tuning pin for pianos
- Patent number 4,398,443
- Issue date Aug 16, 1983
- Bruce F. Kovach
- G10 - MUSICAL INSTRUMENTS ACOUSTICS