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经营范围
发明名称
Improvements in or relating to rotary pumps or compressors
摘要
申请公布号
GB769789(A)
申请公布日期
1957.03.13
申请号
GB19550016415
申请日期
1955.06.08
申请人
NEIL MACKINNON MACDONALD
发明人
分类号
F04B43/00;F04B43/12;F04B45/08
主分类号
F04B43/00
代理机构
代理人
主权项
地址
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