ALEXANDRIA, Va., April 21 -- United States Patent no. 12,607,064, issued on April 21. "Single handrail telescopic ladder" was invented by Miaoren Chen (Jinhua, China). According to the abstract* rel... और पढ़ें
ALEXANDRIA, Va., April 21 -- United States Patent no. 12,607,065, issued on April 21, was assigned to LITTLE GIANT LADDER SYSTEMS LLC (Springville, Utah). "Folding elevated working platform" was inve... और पढ़ें
ALEXANDRIA, Va., April 21 -- United States Patent no. 12,607,066, issued on April 21, was assigned to Yanneng Li (Zhangzhou, China). "Stepless leveler mounted on side of ladder leg" was invented by Y... और पढ़ें
ALEXANDRIA, Va., April 21 -- United States Patent no. 12,607,067, issued on April 21. "Ladder safety device" was invented by Craig Charlton (Brisbane, Australia). According to the abstract* released... और पढ़ें
ALEXANDRIA, Va., April 21 -- United States Patent no. 12,607,068, issued on April 21. "Apparatus for restraining movement of a ladder" was invented by Jeffrey L Sanders (Bakersfield, Calif.). Accord... और पढ़ें
ALEXANDRIA, Va., April 21 -- United States Patent no. 12,607,069, issued on April 21, was assigned to Caterpillar Inc. (Peoria, Ill.). "Down-the-hole hammer with ported piston and flow control valve"... और पढ़ें
ALEXANDRIA, Va., April 21 -- United States Patent no. 12,607,070, issued on April 21, was assigned to Halliburton Energy Services Inc. (Houston). "Piloting pulsed power drilling using a multi-actuato... और पढ़ें
ALEXANDRIA, Va., April 21 -- United States Patent no. 12,607,071, issued on April 21, was assigned to KENNAMETAL INDIA LTD. (Bangalore, India). "Earth-drilling tool" was invented by Nagesh Kumar Gk (... और पढ़ें
ALEXANDRIA, Va., April 21 -- United States Patent no. 12,607,072, issued on April 21, was assigned to Halliburton Energy Services Inc. (Houston). "Multi-layer drill bit apparatus and systems" was inv... और पढ़ें
ALEXANDRIA, Va., April 21 -- United States Patent no. 12,607,073, issued on April 21, was assigned to NATIONAL OILWELL VARCO LP (Houston). "Drill bits for drilling subterranean boreholes and mechanic... और पढ़ें