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patent documentation
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Subject
English
Chinese
IT
international
patent documentation
center
国际专利文献中心
commer.
International
Patent Documentation
Center
国际专利证书中心
earth.sc.
International
Patent Documentation
Centre
国际专利文献中心
telecom.
patent documentation
专利文献
shipb.
patent documentation
专利文件
el.
patent documentation
group
专利文献编辑组
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