The Patents (Amendment No. 3) Rules 1975
These Rules add to the Patents Rules 1968, as amended, a new rule permitting the Comptroller, at any time after three months from the date of publication of the complete specification or other document, to refuse further inspection of any application, specification, drawing or other document in respect of which the Secretary of State has certified that further inspection thereof could in his opinion be prejudicial to the safety of the public.