EHC (Escalator Handrail Company – founded by Ronald H. Ball) has been granted Patent #161654 for escalator handrail advertising.
Application Date: April 29, 1999 and granted on August 11, 2002
EHC (Escalator Handrail Company – founded by Ronald H. Ball) has been granted Patent #161654 for escalator handrail advertising.
Application Date: April 29, 1999 and granted on August 11, 2002