ALEXANDRIA, Va., Oct. 6 -- United States Patent no. 12,752,291, issued on Oct. 6, was assigned to TIANZHOU MEDICAL (SUZHOU) Co. LTD (China).
"Pumping device" was invented by Yaowu Ding (Taixing, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A pumping device, comprising an actuator and a closure, the actuator being connected to the actuator. The pumping device further comprises a collapsible bladder, the collapsible bladder being formed by connecting a plurality of segments, and an included angle being formed between two adjacent segments, wherein at least two adjacent segments are connected to each other by means of a weakened portion."
The patent was filed on July 6, 2022, under Application No. 18/8...