EHC (Escalator Handrail Company – founded by Ronald H. Ball) has been granted Patent #119403 for escalator handrail advertising.
Application Date: February 18, 2000 and granted on November 30, 2006
EHC (Escalator Handrail Company – founded by Ronald H. Ball) has been granted Patent #119403 for escalator handrail advertising.
Application Date: February 18, 2000 and granted on November 30, 2006