Negative pressure device
Latest LIH YANN INDUSTRIAL CO., LTD. Patents:
Description
The broken lines in the drawings illustrate portions of the negative pressure device which form no part of the claimed design.
Claims
I claim the ornamental design for a negative pressure device, as shown and described.
Referenced Cited
Patent History
Patent number: D993362
Type: Grant
Filed: Aug 31, 2020
Date of Patent: Jul 25, 2023
Assignee: LIH YANN INDUSTRIAL CO., LTD. (Taichung)
Inventor: Po-Lin Liao (Taichung)
Primary Examiner: Gino Colan
Application Number: 29/748,653
Type: Grant
Filed: Aug 31, 2020
Date of Patent: Jul 25, 2023
Assignee: LIH YANN INDUSTRIAL CO., LTD. (Taichung)
Inventor: Po-Lin Liao (Taichung)
Primary Examiner: Gino Colan
Application Number: 29/748,653
Classifications