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发明名称
Bell and clapper for bells
摘要
A clapper for a bell is hollow on the inside for receiving objects, such as a personal dedication. The clapper may also be provided with a coating for damping the volume of the bell strike, or at least change the sound.
申请公布号
US7220904(B2)
申请公布日期
2007.05.22
申请号
US20040980955
申请日期
2004.11.04
申请人
ROM WALTER
发明人
ROM WALTER
分类号
G10K1/32;G10D13/08;G10K1/071;G10K1/072;G10K1/08;G10K1/26
主分类号
G10K1/32
代理机构
代理人
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