Patent search ap:("ELECTRICITE DE FRANCE") AND inv:"WACK BERNARD FRANCOIS" Page 1

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发明授权
Apparatus for measuring the humidity and mass of soils 失效
Title translation: 用于测量土壤的湿度和质量的装置

公开(公告)号：US3428806A

公开(公告)日：1969-02-18

申请号：US3428806D

申请日：1966-07-25

Applicant: ELECTRICITE DE FRANCE

Inventor： WACK BERNARD FRANCOIS

IPC: G01N23/06 , G01N23/09 , G01N33/24 , G01V5/02 , H01J39/32

CPC classification number: G01N33/246 , G01N23/09 , G01V5/02

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