Owner PLR IP Holdings, LLC a Delaware limited liability company **** Road Minetonka MN 55343 UNITED STATES OF AMERICA

Service Spruson & Ferguson

Various The registration of the Trade Mark is to have effect from 4th November, 1939 for composite material comprising suspensions of crystalline particles in a light transmitting medium adapted to be used in connection with optical devices such as microscope eye

Class 9 Composite material comprising suspensions of crystalline particles in a light transmitting medium adapted to be used in connection with optical devices such as microscope eye-pieces, glare eliminators, variable density diaphragms, gem testers and goods of a like description in this class; scientific instruments such as cameras, lenses, wave retardation plates, microscopes, stereoscopic implements, optical goods, sun glasses, measuring and testing instruments and goods of a like description in this class; devices for the control of light intensity; light filtering material in this class; small cases adapted to certain filters, eyeglasses and similar articles; electronic flash adaptor cords; synchronization monitors and sychronization controls; apparatus for gauging radioactivity; radiation detection devices, cinematographic apparatus, instruments, devices, accessories, parts thereof and carrying cases forSame; devices for calculating interocular distance, television apparatus, instruments, devices, accessories and parts thereof, television filters; television corrector plates, x-ray film processing apparatus and parts thereof; x-ray cassettes; optical bench elements; photographic copying apparatus, instruments and accessories, polariscopes; view finders; photographic apparatus, instruments; photographic lighting equipment, accessories and parts thereof of metal or predominantly of metal; all glassware articles in this class; sparking plugs, fire extinguishing apparatus; electrical switches