国家/地区 印度（2）
IPC部 F（3）
IPC大类 F25（3）
IPC小类 F25B（3）
IPC F25B043/00（3）
发明人
公开年 2021（3）
申请年 2020（2） 
专利权人

Water purification device used to remove water contaminants e.g. arsenic, pathogen, and bacteria, comprises housing comprising base, side walls and top wall, and first, second, third and fourth layers.

JINDAL H, SANDHU I S, CHITKARA M, PANDA S N

System for cooling concrete roof, has coolant liquid that is provided inside hollow elongated portion, and storing unit that circulates coolant to condensing unit is configured to condense gaseous coolant liquid.

TRIJO T, LAZARUS G A

Liquid storage tank for use in refrigeration system, has liquid storage tank whose lower part is provided with base, where two sides of bottom end of base are provided with supporting frame, and spring whose top end is provided with connecting block.

LU Y