U.S. federal trademark · Serial No. 75204455 · Reg. No. 2190315
HDSL digital loop subscriber carrier systems comprised of a central office terminal connecting to remote terminal(s) using equipment such as central office shelves, line units, alarm units, channel units, PGTC interface units, power supplies, remote terminals, and doublers for providing increased channel capacity over copper wire
Source: USPTO federal trademark records. Informational only, not legal advice. Status and details may lag the live USPTO database.