for an oscillating bell which is driven twice per cycle

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