ALEXANDRIA, Va., Nov. 25 -- United States Patent no. 12,479,002, issued on Nov. 25, was assigned to SIANG SYUAN FU ENTERPRISE Co. LTD. (Changhua County, Taiwan).
"Caulking gun" was invented by Chen-Hsuan Hung (Changhua County, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A caulking gun includes is provided, including: a gun body, a cartridge sleeve, two push rods, a driving member, a lever and a switch mechanism. The cartridge sleeve is rotatably connected to the gun body and configured to receive two sealants. The two push rods are movably disposed on the gun body. The driving member is movably disposed on the gun body and drives the two push rods to move. The lever is swingably disposed on the gun...