Leonard W. Ellen

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Ballinger, Great Missenden, Buckinghamshire, GB

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Patents Grantslast 30 patents

Information Patent Grant
Digital solid state recording of signals characterizing the playing...
- Patent number 4,487,101
- Issue date Dec 11, 1984
- Leonard W. Ellen
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Pipe organ
- Patent number 4,408,517
- Issue date Oct 11, 1983
- Leonard W. Ellen
- G10 - MUSICAL INSTRUMENTS ACOUSTICS