EHC (Escalator Handrail Company – owned by Ronald H. Ball) has been granted Patent #6682806 for escalator handrail advertising.
Application Date: February 19, 1999 and granted on January 27, 2004
EHC (Escalator Handrail Company – owned by Ronald H. Ball) has been granted Patent #6682806 for escalator handrail advertising.
Application Date: February 19, 1999 and granted on January 27, 2004