Inventor

Zhao Yunliang

Inventor

Zhengzhou, CN

Overview

2019

Patent span

Performing operations

Primary field (CPC B)

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

B22Fprimary

B22FWorking metallic powder25%

B24DTools for grinding, buffing or sharpening25%

C22CAlloys25%

E21BEarth or rock drilling25%

PatentTitleYear

Assembled from patent assignee/location history and declaration credentials.

2019Patents assigned to INT DIAMOND SERVICES INC (1)· patent assignee history

2019Based in Zhengzhou, CN· patent location history

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
INT DIAMOND SERVICES INC	1	2019

Locations

Location	Patents	Span
Zhengzhou, CN	1	2019