Group 1 - The State Intellectual Property Office of China has granted a patent for a "protective device for a permeameter, manufacturing method, and usage method" to China Communications Third Navigation Engineering Bureau Co., Ltd. and Shanghai Port Engineering Quality Testing Co., Ltd. The patent authorization announcement number is CN118777152B, with an application date of April 2023 [1] - China Communications Third Navigation Engineering Bureau Co., Ltd. was established in 1984 and is based in Shanghai. The company primarily engages in civil engineering and construction, with a registered capital of 602,095.0987 million RMB. It has invested in 125 enterprises and participated in 5,000 bidding projects, holding 5 trademark records and 2,990 patent records, along with 721 administrative licenses [1] - Shanghai Port Engineering Quality Testing Co., Ltd. was founded in 1999 and is also located in Shanghai, focusing on professional technical services. The company has a registered capital of 20 million RMB, participated in 498 bidding projects, holds 46 patent records, and possesses 13 administrative licenses [1]
中交三航局取得渗压计保护装置专利
Sou Hu Cai Jing·2026-01-07 02:58