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发明名称
Pig extractor
摘要
A pig extractor for extracting pigs from a pipe or conduit. The extractor has an elongated shaft with a handle at one end and a spring latch at an opposing end.
申请公布号
US4759579(A)
申请公布日期
1988.07.26
申请号
US19870048875
申请日期
1987.05.12
申请人
SWENSON, ALVIN L.
发明人
SWENSON, ALVIN L.
分类号
B25J1/04;F16L55/46;(IPC1-7):B25J1/00
主分类号
B25J1/04
代理机构
代理人
主权项
地址
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