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Title:
【考案の名称】エアスイベル付緩衝装置
Document Type and Number:
Japanese Patent JPS60190885
Kind Code:
U
Inventors:
Hiroyuki Kawasaki
Taro Watanabe
Application Number:
JP7844384U
Publication Date:
December 18, 1985
Filing Date:
May 28, 1984
Export Citation:
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International Classes:
E21B17/05; E21B4/14; E21B6/00; E21B6/02; E21B17/06; (IPC1-7): E21B6/00; E21B17/06
Domestic Patent References:
JPS58189288U1983-12-15



 
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