Cement Fixation Papers and correspondence relating to the patent rights for the technique for cement fixation in the human body developed by Robin Ling and Clive Lee. Including UK Patent Specification (no. 1 430 083, 31 Mar 1976); copy of complete and provisional specification (UKPA 10794/72, 8 Mar 1972); correspondence with the NRDC regarding queries for the application. [Note of US patent number on folder (3 889 665, 17 June 1975)]. 1972-1976