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/074/93 in the matter of a reference under Section 37(1)(a) by Profilex Limited in respect of Patent application no EP(UK) 0174172 in the name of Peter Cartwright, dated 7 June 1993.