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发明名称
Improvements in or relating to mechanical resonators or energy exchangers
摘要
申请公布号
GB878212(A)
申请公布日期
1961.09.27
申请号
GB19560029707
申请日期
1956.09.28
申请人
JAMES EDWARD FREEBORN;ROY HENRY CHAPMAN;WILLIAM FREDERICK MARR
发明人
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主分类号
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