EHC (Escalator Handrail Company – owned by Ronald H. Ball) has been granted Patent #2265028 for escalator handrail advertising.
Application Date: March 8, 1999 and granted on June 1, 2004
EHC (Escalator Handrail Company – owned by Ronald H. Ball) has been granted Patent #2265028 for escalator handrail advertising.
Application Date: March 8, 1999 and granted on June 1, 2004