EHC (Escalator Handrail Company – founded by Ronald H. Ball) has been granted Patent #6450228 for escalator handrail advertising.
Application Date: February 22, 2000 and granted on September 17, 2002
Tag: approval
Taiwan Patent # 161654 Granted – Applying Advertising To Handrails
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