If you use assistive technology (such as a screen reader) and need a
version of this document in a more accessible format, please email email@example.com.
Please tell us what format you need. It will help us if you say what assistive technology you use.
Patent decision O/014/87 in the matter of an application for revocation of Patent no 2087012 by Kelsey-Hayes Company dated 9 January 1987.