1939 - Ophthalmic Apparatus - Optometrist - Eye Clinic - Lee - Patent Art Poster S$ 14.12 to S$ 43.66
1889 - Art of Compiling Statistics - Computer - H. Hollerith - Patent Art Poster S$ 14.12 to S$ 43.66
1970 - Television Camera Mounting For Helicopters - Attebery - Patent Art Poster S$ 14.12 to S$ 43.66
1934 - Toy Automobile Hoist - Wyandotte - All Metal Products - Patent Art Poster S$ 14.12 to S$ 43.66