TY  - Data
T1  - Collection of Patents on the Design and Development of Key Equipment and Tools for Polar Drilling
A1  - chi shenggao
DO  - 10.12072/ncdc.SRIPE.db1695.2022
PY  - 2022
DA  - 2022-02-25
PB  - National Cryosphere Desert Data Center
AB  - Five patents applied in Wuhan, Hubei Province from 2017 to 2020, covering technologies and innovations in anti-dropping technology for screw drill tools, PDC drill bits, diamond composite sheets, and rubber formulas.
DB  - NCDC
UR  - http://www.ncdc.ac.cn/portal/metadata/3946a3c1-059e-40d8-88f0-70ab8543084f
ER  -