Who laid the first commercial coaxial cable? where

1880- Oliver Hathaway obtained the British coaxial cable patent (patent number 1 407).

1884- Werner von Siemens obtained the coaxial cable patent in Germany.

194 1 year ── in the United States, at & amp； T laid the first commercial coaxial cable. From Minneapolis, Minnesota to Steven Puying, Wisconsin. The L 1 system it uses can accommodate a TV band or 480 telephone lines.

1956 ── The world's first transatlantic coaxial cable ──TAT- 1 (transatlantic? No. 1) has been laid.