国家/地区 中国（3）
IPC部 E（3）
IPC大类 F28（3） E04（2） F24（2）
IPC小类 F28D（3）
IPC E04F015/18（2）
发明人
公开年 2021（3）
申请年 2020（2） 
专利权人

Semi-modular energy-saving graphene floor heating, has connecting spring whose upper and lower ends are connected with sliding rod, where end parts of two groups of sliding rods are correspondingly provided with clamping hook clamped in substrate.

YANG Y

Self-heating phase change heat storage floor comprises wear-resistant layer, insulating waterproof layer, upper phase change heat storage layer, first copper film, self-heating phase change heat storage core, and second copper film.

LI C, XIE B, CHEN J

Bidirectional cast iron gate, has door frame provided with first cast iron door and second cast iron door, and servo motor whose output shaft is connected with rotating shaft through coupler, where top of door frame is welded with mounting chamber.

DU Y