Search Results - "JI SHIGUO" :: K.UTB vyhledávací portál | TBU Library Retrieval Portal

Soil moisture preserving flower-pot

Soil moisture preserving flower-pot

by LIYUN LIU, QIANG JI, SHIGUO JI
Year of Publication 28.04.1999

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Patent

Heating device for electric heating tank of oil production plant

Heating device for electric heating tank of oil production plant

by GAO YANG, JI SHIGUO, YU HAIJUN, LI GUIWEN, SONG JIANTAO, BAI CHONGGAO
Year of Publication 13.08.2024

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Patent