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矿井提升机延迟式速度保护装置
Release time:2024-05-28  Hits:

Note:于月森
Type of Patent:国际
State of Patent:专利撤回
Application Number:200420079614.5
Authorization number:CN 2748426Y
Number of Inventors:2
Service Invention or Not:no
Application Date:2004-09-20
Authorization Date:2005-12-28