1. C H Tel Co Inc 11700 Piedmont Rd, Clarksburg, MD 20871 Coordinate: 39.24875,-77.24237 Phone: (301) 353-0424
2. Infospherix Inc 22530 Gateway Center Dr Ste 200, Clarksburg, MD 20871 Coordinate: 39.23042,-77.2813 Phone: (301) 556-9400