SUBSIDENCE SENSING DEVICE WITH LIQUID REPLENISHING MECHANISM | Patent Publication Number 20220042839

US 20220042839 A1
Patent Number-
Application Number16987715
Filled DateAug 7, 2020
Priority DateAug 7, 2020
Publication DateFeb 10, 2022
Original Assignee
Current Assignee
Inventor/ApplicantsCheng-Yin SHIH
Ming-Chun LAI
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