Show R Roosevelt li Puts Control On Plane Plan Export WASHINGTON Sept 13 A President R Roosevelt clamped license II- II cense ense requirements Friday on the export of certain plans and supplies Supplies Sup up- up plies for aircraft in order to fur further further further ther strengthen the national de de- de The presidential proclamation made public at his press conference conference conference confer confer- ence added to the export license list equipment used for producing aviation motor f fuel el and tetraethyl lead or any plans or specifications used in the design construction or op operation ration ratio of such equipment and plans specifications and descriptive descriptive descriptive tive or technical information of any kind setting forth the design designor or construction of aircraft or aircraft aircraft air aIr- t o craft engines |