EHC (Escalator Handrail Company – owned by Ronald H. Ball) has been granted Patent #213538 for escalator handrail advertising.
Application Date: February 18, 2000 and granted on January 8, 2008
EHC (Escalator Handrail Company – owned by Ronald H. Ball) has been granted Patent #213538 for escalator handrail advertising.
Application Date: February 18, 2000 and granted on January 8, 2008