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/116/90 in the matter of an application under section 72 by Isobel Martin for the revocation of Patent no 2151269 in the name of Rosemary Vanessa Amelia Moore dated 16 October 1990.