GENEVA, Aug. 31 -- HYDRIL USA DISTRIBUTION LLC filed a patent application (US2026/015852) for “RADIAL STACK NEXT GENERATION ANNULAR PACKING UNIT”. With publication no. WO/2026/178243, here are the other details related to the patent application:
Kind: Initial Publication with ISR [A1]
IPC: E21B 33/06
Notably, the patent application was submitted under the International Patent Classification (IPC) system, which is managed by the World Intellectual Property Organization (WIPO).
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