发明名称 |
IMPROVEMENTS IN ELECTRIC BELLS. |
摘要 |
A bell member for an electric bell, in which the thickness of the bell member varies from place to place in accord with the desired total characteristics of the bell. Variations in the vibrational mode of the bell with variations in the thickness of the base and skirt are particularly considered. |
申请公布号 |
AU1295370(A) |
申请公布日期 |
1971.09.30 |
申请号 |
AU19700012953 |
申请日期 |
1970.03.23 |
申请人 |
V. & E. FRIEDLAND LIMITED |
发明人 |
JOHN DOGGARD;PAUL ROGERSON GLEAVE |
分类号 |
G10K1/063;G10K1/10;(IPC1-7):G10K;G08B |
主分类号 |
G10K1/063 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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