for an oscillating bell which is driven twice per cycle

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Patents Grantslast 30 patents

Information Patent Grant
1942360
- Patent number 1,942,360
- Issue date Jan 2, 1934
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
1817032
- Patent number 1,817,032
- Issue date Aug 4, 1931
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
1782844
- Patent number 1,782,844
- Issue date Nov 25, 1930
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
1645822
- Patent number 1,645,822
- Issue date Oct 18, 1927
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
1606464
- Patent number 1,606,464
- Issue date Nov 9, 1926
- G10 - MUSICAL INSTRUMENTS ACOUSTICS