Jack O. Holland

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Nashville, TN, US

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Patents Grantslast 30 patents

Information Patent Grant
Pitch adjuster for valved brass instruments
- Patent number 4,276,804
- Issue date Jul 7, 1981
- Jack O. Holland
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Mouthpiece practice holder and tuning adjuster
- Patent number 4,245,544
- Issue date Jan 20, 1981
- Jack O. Holland
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS